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CVE-2020-24489 (GCVE-0-2020-24489)
Vulnerability from cvelistv5 – Published: 2021-06-09 19:59 – Updated: 2024-08-04 15:12
VLAI
EPSS
Summary
Incomplete cleanup in some Intel(R) VT-d products may allow an authenticated user to potentially enable escalation of privilege via local access.
Severity
No CVSS data available.
CWE
- escalation of privilege
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.intel.com/content/www/us/en/security-… | x_refsource_MISC |
| https://www.debian.org/security/2021/dsa-4934 | vendor-advisoryx_refsource_DEBIAN |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Intel(R) VT-d products |
Affected:
See references
|
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}
}
RHSA-2021:2522
Vulnerability from csaf_redhat - Published: 2021-06-22 14:57 - Updated: 2026-04-30 04:04Summary
Red Hat Security Advisory: Red Hat Virtualization Host security update [ovirt-4.4.6]
Severity
Important
Notes
Topic: An update for imgbased, redhat-release-virtualization-host, and redhat-virtualization-host is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 8.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts (RHVH) are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks.
The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts (RHVH) are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks.
The ovirt-node-ng packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts (RHVH) are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks.
Security Fix(es):
* glib: integer overflow in g_bytes_new function on 64-bit platforms due to an implicit cast from 64 bits to 32 bits (CVE-2021-27219)
* kernel: userspace applications can misuse the KVM API to cause a write of 16 bytes at an offset up to 32 GB from vcpu->run (CVE-2021-3501)
* polkit: local privilege escalation using polkit_system_bus_name_get_creds_sync() (CVE-2021-3560)
* hw: vt-d related privilege escalation (CVE-2020-24489)
For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.
Bug Fix(es):
* Previously, systemtap dependencies were not included in the RHV-H channel. Therefore, systemtap could not be installed.
In this release, the systemtap dependencies have been included in the channel, resolving the issue. (BZ#1903997)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in Intel® VT-d products. Entries from the context cache on some types of context cache invalidations may not be properly invalidated which may allow an authenticated user to potentially enable escalation of privilege via local access. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
8.8 (High)
Affected products
Fixed
2 products
Known not affected
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.4.6-2.el8ev.src | — | ||
| Unresolved product id: 8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.4.6-2.el8ev.x86_64 | — | ||
| Unresolved product id: 8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-image-update-placeholder-0:4.4.6-2.el8ev.noarch | — |
Threats
Impact
Important
A flaw was found in the Linux kernel. The value of internal.ndata, in the KVM API, is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-of-bounds write. The highest threat from this vulnerability is to data integrity and system availability.
7.8 (High)
Affected products
Fixed
2 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHV-Hypervisor-4:redhat-virtualization-host-0:4.4.6-20210615.0.el8_4.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.4.6-20210615.0.el8_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
Known not affected
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.4.6-2.el8ev.src | — |
Workaround
|
|
| Unresolved product id: 8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.4.6-2.el8ev.x86_64 | — |
Workaround
|
|
| Unresolved product id: 8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-image-update-placeholder-0:4.4.6-2.el8ev.noarch | — |
Workaround
|
Threats
Impact
Important
It was found that polkit could be tricked into bypassing the credential checks for D-Bus requests, elevating the privileges of the requestor to the root user. This flaw could be used by an unprivileged local attacker to, for example, create a new local administrator. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
7.8 (High)
Affected products
Fixed
2 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHV-Hypervisor-4:redhat-virtualization-host-0:4.4.6-20210615.0.el8_4.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.4.6-20210615.0.el8_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
Known not affected
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.4.6-2.el8ev.src | — |
Workaround
|
|
| Unresolved product id: 8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.4.6-2.el8ev.x86_64 | — |
Workaround
|
|
| Unresolved product id: 8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-image-update-placeholder-0:4.4.6-2.el8ev.noarch | — |
Workaround
|
Threats
Exploit Status
CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Impact
Important
An integer wraparound was discovered in glib due to passing a 64 bit sized value to function g_memdup() which accepts a 32 bits number as argument. An attacker may abuse this flaw when an application linked against the glib library uses g_bytes_new() function or possibly other functions that use g_memdup() underneath and accept a 64 bits argument as size. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
9.8 (Critical)
Affected products
Fixed
2 products
Known not affected
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.4.6-2.el8ev.src | — | ||
| Unresolved product id: 8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.4.6-2.el8ev.x86_64 | — | ||
| Unresolved product id: 8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-image-update-placeholder-0:4.4.6-2.el8ev.noarch | — |
Threats
Impact
Important
References
27 references
Acknowledgments
Intel
Google
Reiji Watanabe
GitHub Security Lab
Kevin Backhouse
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},
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{
"category": "external",
"summary": "https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/",
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"details": "Important"
}
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"title": "polkit: local privilege escalation using polkit_system_bus_name_get_creds_sync()"
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"id": "CWE-190",
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"title": "Vulnerability description"
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"title": "Vulnerability summary"
},
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"text": "Applications that just use GBytes to access the data are affected by this flaw but the highest threat is to data confidentiality and/or the application availability, due to possible out-of-bounds reads. However, if the data in GBytes is taken through functions such as g_bytes_unref_to_data or g_bytes_unref_to_array it might be possible to have out-of-bounds writes due to the wrongly reported size of the buffer.\n\nApplications that use g_memdup to duplicate memory with user-controlled sizes should pay extra attention to the fact that g_memdup accepts a guint size instead of gsize. Thus directly passing a gsize value to g_memdup may results in integer truncation, allocating a buffer smaller than expected.",
"title": "Statement"
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}
RHSA-2021:3027
Vulnerability from csaf_redhat - Published: 2021-08-09 09:56 - Updated: 2025-11-21 18:24Summary
Red Hat Security Advisory: microcode_ctl security, bug fix and enhancement update
Severity
Important
Notes
Topic: An update for microcode_ctl is now available for Red Hat Enterprise Linux 8.
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
Details: The microcode_ctl packages provide microcode updates for Intel.
Security Fix(es):
* hw: Special Register Buffer Data Sampling (SRBDS) (CVE-2020-0543)
* hw: Vector Register Data Sampling (CVE-2020-0548)
* hw: L1D Cache Eviction Sampling (CVE-2020-0549)
* hw: vt-d related privilege escalation (CVE-2020-24489)
* hw: improper isolation of shared resources in some Intel Processors
(CVE-2020-24511)
* hw: observable timing discrepancy in some Intel Processors
(CVE-2020-24512)
* hw: Information disclosure issue in Intel SGX via RAPL interface
(CVE-2020-8695)
* hw: Vector Register Leakage-Active (CVE-2020-8696)
* hw: Fast forward store predictor (CVE-2020-8698)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A new domain bypass transient execution attack known as Special Register Buffer Data Sampling (SRBDS) has been found. This flaw allows data values from special internal registers to be leaked by an attacker able to execute code on any core of the CPU. An unprivileged, local attacker can use this flaw to infer values returned by affected instructions known to be commonly used during cryptographic operations that rely on uniqueness, secrecy, or both.
6.5 (Medium)
Affected products
Fixed
2 products
Threats
Impact
Moderate
A flaw was found in Intel processors where a local attacker is able to gain information about registers used for vector calculations by observing register states from other processes running on the system. This results in a race condition where store buffers, which were not cleared, could be read by another process or a CPU sibling. The highest threat from this vulnerability is data confidentiality where an attacker could read arbitrary data as it passes through the processor.
CWE-200 - Exposure of Sensitive Information to an Unauthorized ActorAffected products
Threats
Impact
Low
A microarchitectural timing flaw was found on some Intel processors. A corner case exists where data in-flight during the eviction process can end up in the “fill buffers” and not properly cleared by the MDS mitigations. The fill buffer contents (which were expected to be blank) can be inferred using MDS or TAA style attack methods to allow a local attacker to infer fill buffer values.
6.5 (Medium)
Affected products
Threats
Impact
Moderate
A vulnerability was found in Intel's implementation of RAPL (Running Average Power Limit). An attacker with a local account could query the power management functionality to intelligently infer SGX enclave computation values by measuring power usage in the RAPL subsystem.
5.1 (Medium)
Affected products
Fixed
2 products
Threats
Impact
Moderate
A flaw was found in the Intel Advanced Vector Extensions (AVX) implementation, where a local authenticated attacker with the ability to execute AVX instructions can gather the AVX register state from previous AVX executions. This vulnerability allows information disclosure of the AVX register state.
CWE-212 - Improper Removal of Sensitive Information Before Storage or TransferAffected products
Threats
Impact
Moderate
A flaw was found in the CPU microarchitecture where a local attacker is able to abuse a timing issue which may allow them to infer internal architectural state from previous executions on the CPU.
5.5 (Medium)
Affected products
Threats
Impact
Moderate
A flaw was found in Intel® VT-d products. Entries from the context cache on some types of context cache invalidations may not be properly invalidated which may allow an authenticated user to potentially enable escalation of privilege via local access. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
8.8 (High)
Affected products
Threats
Impact
Important
Microcode misconfiguration in some Intel processors may cause EIBRS mitigation (CVE-2017-5715) to be incomplete. As a consequence, this issue may allow an authenticated user to potentially enable information disclosure via local access.
5.6 (Medium)
Affected products
Threats
Impact
Moderate
Observable timing discrepancy in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.
CWE-200 - Exposure of Sensitive Information to an Unauthorized ActorAffected products
Threats
Impact
Low
References
63 references
Acknowledgments
Intel
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"text": "The microcode_ctl packages provide microcode updates for Intel.\n\nSecurity Fix(es):\n\n* hw: Special Register Buffer Data Sampling (SRBDS) (CVE-2020-0543)\n\n* hw: Vector Register Data Sampling (CVE-2020-0548)\n\n* hw: L1D Cache Eviction Sampling (CVE-2020-0549)\n\n* hw: vt-d related privilege escalation (CVE-2020-24489)\n\n* hw: improper isolation of shared resources in some Intel Processors\n(CVE-2020-24511)\n\n* hw: observable timing discrepancy in some Intel Processors\n(CVE-2020-24512)\n\n* hw: Information disclosure issue in Intel SGX via RAPL interface\n(CVE-2020-8695)\n\n* hw: Vector Register Leakage-Active (CVE-2020-8696)\n\n* hw: Fast forward store predictor (CVE-2020-8698)",
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},
{
"category": "external",
"summary": "https://en.wikipedia.org/wiki/Power_analysis",
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"summary": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00389.html",
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"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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},
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],
"threats": [
{
"category": "impact",
"details": "Low"
}
],
"title": "hw: observable timing discrepancy in some Intel Processors"
}
]
}
RHSA-2021:3028
Vulnerability from csaf_redhat - Published: 2021-08-09 10:18 - Updated: 2025-11-21 18:24Summary
Red Hat Security Advisory: microcode_ctl security, bug fix and enhancement update
Severity
Important
Notes
Topic: An update for microcode_ctl is now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
Details: The microcode_ctl packages provide microcode updates for Intel.
Security Fix(es):
* hw: Special Register Buffer Data Sampling (SRBDS) (CVE-2020-0543)
* hw: Vector Register Data Sampling (CVE-2020-0548)
* hw: L1D Cache Eviction Sampling (CVE-2020-0549)
* hw: vt-d related privilege escalation (CVE-2020-24489)
* hw: improper isolation of shared resources in some Intel Processors
(CVE-2020-24511)
* hw: observable timing discrepancy in some Intel Processors
(CVE-2020-24512)
* hw: Information disclosure issue in Intel SGX via RAPL interface
(CVE-2020-8695)
* hw: Vector Register Leakage-Active (CVE-2020-8696)
* hw: Fast forward store predictor (CVE-2020-8698)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A new domain bypass transient execution attack known as Special Register Buffer Data Sampling (SRBDS) has been found. This flaw allows data values from special internal registers to be leaked by an attacker able to execute code on any core of the CPU. An unprivileged, local attacker can use this flaw to infer values returned by affected instructions known to be commonly used during cryptographic operations that rely on uniqueness, secrecy, or both.
6.5 (Medium)
Affected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
A flaw was found in Intel processors where a local attacker is able to gain information about registers used for vector calculations by observing register states from other processes running on the system. This results in a race condition where store buffers, which were not cleared, could be read by another process or a CPU sibling. The highest threat from this vulnerability is data confidentiality where an attacker could read arbitrary data as it passes through the processor.
CWE-200 - Exposure of Sensitive Information to an Unauthorized ActorAffected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Low
A microarchitectural timing flaw was found on some Intel processors. A corner case exists where data in-flight during the eviction process can end up in the “fill buffers” and not properly cleared by the MDS mitigations. The fill buffer contents (which were expected to be blank) can be inferred using MDS or TAA style attack methods to allow a local attacker to infer fill buffer values.
6.5 (Medium)
Affected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A vulnerability was found in Intel's implementation of RAPL (Running Average Power Limit). An attacker with a local account could query the power management functionality to intelligently infer SGX enclave computation values by measuring power usage in the RAPL subsystem.
5.1 (Medium)
Affected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
A flaw was found in the Intel Advanced Vector Extensions (AVX) implementation, where a local authenticated attacker with the ability to execute AVX instructions can gather the AVX register state from previous AVX executions. This vulnerability allows information disclosure of the AVX register state.
CWE-212 - Improper Removal of Sensitive Information Before Storage or TransferAffected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in the CPU microarchitecture where a local attacker is able to abuse a timing issue which may allow them to infer internal architectural state from previous executions on the CPU.
5.5 (Medium)
Affected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in Intel® VT-d products. Entries from the context cache on some types of context cache invalidations may not be properly invalidated which may allow an authenticated user to potentially enable escalation of privilege via local access. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
8.8 (High)
Affected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Important
Microcode misconfiguration in some Intel processors may cause EIBRS mitigation (CVE-2017-5715) to be incomplete. As a consequence, this issue may allow an authenticated user to potentially enable information disclosure via local access.
5.6 (Medium)
Affected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
Observable timing discrepancy in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.
CWE-200 - Exposure of Sensitive Information to an Unauthorized ActorAffected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Client-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Workstation-7.9.Z:microcode_ctl-debuginfo-2:2.1-73.11.el7_9.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Low
References
62 references
Acknowledgments
Intel
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RHSA-2021:3029
Vulnerability from csaf_redhat - Published: 2021-08-10 16:13 - Updated: 2025-11-21 18:24Summary
Red Hat Security Advisory: microcode_ctl security, bug fix and enhancement update
Severity
Important
Notes
Topic: An update for microcode_ctl is now available for Red Hat Enterprise Linux 7.7 Extended Update Support.
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
Details: The microcode_ctl packages provide microcode updates for Intel.
Security Fix(es):
* hw: Special Register Buffer Data Sampling (SRBDS) (CVE-2020-0543)
* hw: Vector Register Data Sampling (CVE-2020-0548)
* hw: L1D Cache Eviction Sampling (CVE-2020-0549)
* hw: vt-d related privilege escalation (CVE-2020-24489)
* hw: improper isolation of shared resources in some Intel Processors (CVE-2020-24511)
* hw: observable timing discrepancy in some Intel Processors (CVE-2020-24512)
* hw: Information disclosure issue in Intel SGX via RAPL interface (CVE-2020-8695)
* hw: Vector Register Leakage-Active (CVE-2020-8696)
* hw: Fast forward store predictor (CVE-2020-8698)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A new domain bypass transient execution attack known as Special Register Buffer Data Sampling (SRBDS) has been found. This flaw allows data values from special internal registers to be leaked by an attacker able to execute code on any core of the CPU. An unprivileged, local attacker can use this flaw to infer values returned by affected instructions known to be commonly used during cryptographic operations that rely on uniqueness, secrecy, or both.
6.5 (Medium)
Affected products
Fixed
6 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-debuginfo-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-debuginfo-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
A flaw was found in Intel processors where a local attacker is able to gain information about registers used for vector calculations by observing register states from other processes running on the system. This results in a race condition where store buffers, which were not cleared, could be read by another process or a CPU sibling. The highest threat from this vulnerability is data confidentiality where an attacker could read arbitrary data as it passes through the processor.
CWE-200 - Exposure of Sensitive Information to an Unauthorized ActorAffected products
Fixed
6 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-debuginfo-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-debuginfo-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Low
A microarchitectural timing flaw was found on some Intel processors. A corner case exists where data in-flight during the eviction process can end up in the “fill buffers” and not properly cleared by the MDS mitigations. The fill buffer contents (which were expected to be blank) can be inferred using MDS or TAA style attack methods to allow a local attacker to infer fill buffer values.
6.5 (Medium)
Affected products
Fixed
6 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-debuginfo-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-debuginfo-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A vulnerability was found in Intel's implementation of RAPL (Running Average Power Limit). An attacker with a local account could query the power management functionality to intelligently infer SGX enclave computation values by measuring power usage in the RAPL subsystem.
5.1 (Medium)
Affected products
Fixed
6 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-debuginfo-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-debuginfo-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
A flaw was found in the Intel Advanced Vector Extensions (AVX) implementation, where a local authenticated attacker with the ability to execute AVX instructions can gather the AVX register state from previous AVX executions. This vulnerability allows information disclosure of the AVX register state.
CWE-212 - Improper Removal of Sensitive Information Before Storage or TransferAffected products
Fixed
6 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-debuginfo-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-debuginfo-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in the CPU microarchitecture where a local attacker is able to abuse a timing issue which may allow them to infer internal architectural state from previous executions on the CPU.
5.5 (Medium)
Affected products
Fixed
6 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-debuginfo-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-debuginfo-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in Intel® VT-d products. Entries from the context cache on some types of context cache invalidations may not be properly invalidated which may allow an authenticated user to potentially enable escalation of privilege via local access. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
8.8 (High)
Affected products
Fixed
6 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-debuginfo-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-debuginfo-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Important
Microcode misconfiguration in some Intel processors may cause EIBRS mitigation (CVE-2017-5715) to be incomplete. As a consequence, this issue may allow an authenticated user to potentially enable information disclosure via local access.
5.6 (Medium)
Affected products
Fixed
6 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-debuginfo-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-debuginfo-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
Observable timing discrepancy in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.
CWE-200 - Exposure of Sensitive Information to an Unauthorized ActorAffected products
Fixed
6 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:microcode_ctl-debuginfo-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.7.EUS:microcode_ctl-debuginfo-2:2.1-53.18.el7_7.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Low
References
62 references
Acknowledgments
Intel
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},
{
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"title": "CVSS score applicability"
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RHSA-2021:3176
Vulnerability from csaf_redhat - Published: 2021-08-17 08:33 - Updated: 2025-11-21 18:24Summary
Red Hat Security Advisory: microcode_ctl security, bug fix and enhancement update
Severity
Important
Notes
Topic: An update for microcode_ctl is now available for Red Hat Enterprise Linux 8.1 Extended Update Support.
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
Details: The microcode_ctl packages provide microcode updates for Intel.
Security Fixes:
* hw: Vector Register Data Sampling (CVE-2020-0548)
* hw: L1D Cache Eviction Sampling (CVE-2020-0549)
* hw: Special Register Buffer Data Sampling (SRBDS) (CVE-2020-0543)
* hw: Information disclosure issue in Intel SGX via RAPL interface (CVE-2020-8695)
* hw: Vector Register Leakage-Active (CVE-2020-8696)
* hw: Fast forward store predictor (CVE-2020-8698)
* hw: vt-d related privilege escalation (CVE-2020-24489)
* hw: improper isolation of shared resources in some Intel Processors (CVE-2020-24511)
* hw: observable timing discrepancy in some Intel Processors (CVE-2020-24512)
Bug Fix(es):
* [rhel-8.1.0.z] Re-enable 06-5e-03 (SKL-H/S, CPUID 0x506e3) latest microcode updates (BZ#1972327)
* [rhel-8.1.0.z] Re-enable 06-8c-01 (TGL-UP3/UP4, CPUID 0x806c1) latest microcode updates (BZ#1972331)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A new domain bypass transient execution attack known as Special Register Buffer Data Sampling (SRBDS) has been found. This flaw allows data values from special internal registers to be leaked by an attacker able to execute code on any core of the CPU. An unprivileged, local attacker can use this flaw to infer values returned by affected instructions known to be commonly used during cryptographic operations that rely on uniqueness, secrecy, or both.
6.5 (Medium)
Affected products
Threats
Impact
Moderate
A flaw was found in Intel processors where a local attacker is able to gain information about registers used for vector calculations by observing register states from other processes running on the system. This results in a race condition where store buffers, which were not cleared, could be read by another process or a CPU sibling. The highest threat from this vulnerability is data confidentiality where an attacker could read arbitrary data as it passes through the processor.
CWE-200 - Exposure of Sensitive Information to an Unauthorized ActorAffected products
Threats
Impact
Low
A microarchitectural timing flaw was found on some Intel processors. A corner case exists where data in-flight during the eviction process can end up in the “fill buffers” and not properly cleared by the MDS mitigations. The fill buffer contents (which were expected to be blank) can be inferred using MDS or TAA style attack methods to allow a local attacker to infer fill buffer values.
6.5 (Medium)
Affected products
Threats
Impact
Moderate
A vulnerability was found in Intel's implementation of RAPL (Running Average Power Limit). An attacker with a local account could query the power management functionality to intelligently infer SGX enclave computation values by measuring power usage in the RAPL subsystem.
5.1 (Medium)
Affected products
Threats
Impact
Moderate
A flaw was found in the Intel Advanced Vector Extensions (AVX) implementation, where a local authenticated attacker with the ability to execute AVX instructions can gather the AVX register state from previous AVX executions. This vulnerability allows information disclosure of the AVX register state.
CWE-212 - Improper Removal of Sensitive Information Before Storage or TransferAffected products
Threats
Impact
Moderate
A flaw was found in the CPU microarchitecture where a local attacker is able to abuse a timing issue which may allow them to infer internal architectural state from previous executions on the CPU.
5.5 (Medium)
Affected products
Threats
Impact
Moderate
A flaw was found in Intel® VT-d products. Entries from the context cache on some types of context cache invalidations may not be properly invalidated which may allow an authenticated user to potentially enable escalation of privilege via local access. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
8.8 (High)
Affected products
Threats
Impact
Important
Microcode misconfiguration in some Intel processors may cause EIBRS mitigation (CVE-2017-5715) to be incomplete. As a consequence, this issue may allow an authenticated user to potentially enable information disclosure via local access.
5.6 (Medium)
Affected products
Threats
Impact
Moderate
Observable timing discrepancy in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.
CWE-200 - Exposure of Sensitive Information to an Unauthorized ActorAffected products
Threats
Impact
Low
References
63 references
Acknowledgments
Intel
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"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
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"category": "impact",
"details": "Moderate"
}
],
"title": "hw: Special Register Buffer Data Sampling (SRBDS)"
},
{
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"name": "Exposure of Sensitive Information to an Unauthorized Actor"
},
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"system_name": "Red Hat Bugzilla ID",
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}
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{
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"title": "Vulnerability description"
},
{
"category": "summary",
"text": "hw: Vector Register Data Sampling",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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{
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"url": "https://www.cve.org/CVERecord?id=CVE-2020-0548"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-0548",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-0548"
},
{
"category": "external",
"summary": "https://access.redhat.com/solutions/l1d-cache-eviction-and-vector-register-sampling",
"url": "https://access.redhat.com/solutions/l1d-cache-eviction-and-vector-register-sampling"
},
{
"category": "external",
"summary": "https://blogs.intel.com/technology/2020/01/ipas-intel-sa-00329/",
"url": "https://blogs.intel.com/technology/2020/01/ipas-intel-sa-00329/"
},
{
"category": "external",
"summary": "https://cacheoutattack.com/CacheOut.pdf",
"url": "https://cacheoutattack.com/CacheOut.pdf"
},
{
"category": "external",
"summary": "https://software.intel.com/security-software-guidance/software-guidance/l1d-eviction-sampling",
"url": "https://software.intel.com/security-software-guidance/software-guidance/l1d-eviction-sampling"
}
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"category": "vendor_fix",
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"details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
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"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
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"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N",
"version": "3.0"
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}
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"title": "Vulnerability description"
},
{
"category": "summary",
"text": "hw: L1D Cache Eviction Sampling",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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},
{
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-0549"
},
{
"category": "external",
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"url": "https://access.redhat.com/solutions/l1d-cache-eviction-and-vector-register-sampling"
},
{
"category": "external",
"summary": "https://blogs.intel.com/technology/2020/01/ipas-intel-sa-00329/",
"url": "https://blogs.intel.com/technology/2020/01/ipas-intel-sa-00329/"
},
{
"category": "external",
"summary": "https://cacheoutattack.com/CacheOut.pdf",
"url": "https://cacheoutattack.com/CacheOut.pdf"
},
{
"category": "external",
"summary": "https://software.intel.com/security-software-guidance/software-guidance/l1d-eviction-sampling",
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}
],
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"category": "vendor_fix",
"date": "2021-08-17T08:33:36+00:00",
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}
],
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"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
"version": "3.0"
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"details": "Moderate"
}
],
"title": "hw: L1D Cache Eviction Sampling"
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{
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]
}
],
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"ids": [
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"text": "1828583"
}
],
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"text": "A vulnerability was found in Intel\u0027s implementation of RAPL (Running Average Power Limit). An attacker with a local account could query the power management functionality to intelligently infer SGX enclave computation values by measuring power usage in the RAPL subsystem.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "hw: Information disclosure issue in Intel SGX via RAPL interface",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8695"
},
{
"category": "external",
"summary": "https://en.wikipedia.org/wiki/Power_analysis",
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}
],
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"date": "2021-08-17T08:33:36+00:00",
"details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
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],
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},
"url": "https://access.redhat.com/errata/RHSA-2021:3176"
},
{
"category": "workaround",
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"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 5.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
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"title": "hw: Information disclosure issue in Intel SGX via RAPL interface"
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"acknowledgments": [
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"Intel"
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],
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"ids": [
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"notes": [
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"title": "Vulnerability description"
},
{
"category": "summary",
"text": "hw: Vector Register Leakage-Active",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"scope": "CHANGED",
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{
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{
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"title": "Vulnerability summary"
},
{
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"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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"url": "https://access.redhat.com/errata/RHSA-2021:3176"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"products": [
"BaseOS-8.1.0.Z.EUS:microcode_ctl-4:20190618-1.20210608.1.el8_1.src",
"BaseOS-8.1.0.Z.EUS:microcode_ctl-4:20190618-1.20210608.1.el8_1.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "hw: Fast forward store predictor"
},
{
"acknowledgments": [
{
"names": [
"Intel"
]
}
],
"cve": "CVE-2020-24489",
"cwe": {
"id": "CWE-459",
"name": "Incomplete Cleanup"
},
"discovery_date": "2021-05-20T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1962650"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Intel\u00ae VT-d products. Entries from the context cache on some types of context cache invalidations may not be properly invalidated which may allow an authenticated user to potentially enable escalation of privilege via local access. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "hw: vt-d related privilege escalation",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"BaseOS-8.1.0.Z.EUS:microcode_ctl-4:20190618-1.20210608.1.el8_1.src",
"BaseOS-8.1.0.Z.EUS:microcode_ctl-4:20190618-1.20210608.1.el8_1.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2020-24489"
},
{
"category": "external",
"summary": "RHBZ#1962650",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1962650"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2020-24489",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-24489"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-24489",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-24489"
}
],
"release_date": "2021-06-08T17:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2021-08-17T08:33:36+00:00",
"details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"BaseOS-8.1.0.Z.EUS:microcode_ctl-4:20190618-1.20210608.1.el8_1.src",
"BaseOS-8.1.0.Z.EUS:microcode_ctl-4:20190618-1.20210608.1.el8_1.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2021:3176"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"BaseOS-8.1.0.Z.EUS:microcode_ctl-4:20190618-1.20210608.1.el8_1.src",
"BaseOS-8.1.0.Z.EUS:microcode_ctl-4:20190618-1.20210608.1.el8_1.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "hw: vt-d related privilege escalation"
},
{
"acknowledgments": [
{
"names": [
"Intel"
]
}
],
"cve": "CVE-2020-24511",
"cwe": {
"id": "CWE-200",
"name": "Exposure of Sensitive Information to an Unauthorized Actor"
},
"discovery_date": "2021-05-20T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1962702"
}
],
"notes": [
{
"category": "description",
"text": "Microcode misconfiguration in some Intel processors may cause EIBRS mitigation (CVE-2017-5715) to be incomplete. As a consequence, this issue may allow an authenticated user to potentially enable information disclosure via local access.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "hw: improper isolation of shared resources in some Intel Processors",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"BaseOS-8.1.0.Z.EUS:microcode_ctl-4:20190618-1.20210608.1.el8_1.src",
"BaseOS-8.1.0.Z.EUS:microcode_ctl-4:20190618-1.20210608.1.el8_1.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2020-24511"
},
{
"category": "external",
"summary": "RHBZ#1962702",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1962702"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2020-24511",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-24511"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-24511",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-24511"
}
],
"release_date": "2021-06-08T17:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2021-08-17T08:33:36+00:00",
"details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"BaseOS-8.1.0.Z.EUS:microcode_ctl-4:20190618-1.20210608.1.el8_1.src",
"BaseOS-8.1.0.Z.EUS:microcode_ctl-4:20190618-1.20210608.1.el8_1.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2021:3176"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 5.6,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N",
"version": "3.1"
},
"products": [
"BaseOS-8.1.0.Z.EUS:microcode_ctl-4:20190618-1.20210608.1.el8_1.src",
"BaseOS-8.1.0.Z.EUS:microcode_ctl-4:20190618-1.20210608.1.el8_1.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "hw: improper isolation of shared resources in some Intel Processors"
},
{
"acknowledgments": [
{
"names": [
"Intel"
]
}
],
"cve": "CVE-2020-24512",
"cwe": {
"id": "CWE-200",
"name": "Exposure of Sensitive Information to an Unauthorized Actor"
},
"discovery_date": "2021-05-20T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1962722"
}
],
"notes": [
{
"category": "description",
"text": "Observable timing discrepancy in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "hw: observable timing discrepancy in some Intel Processors",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"BaseOS-8.1.0.Z.EUS:microcode_ctl-4:20190618-1.20210608.1.el8_1.src",
"BaseOS-8.1.0.Z.EUS:microcode_ctl-4:20190618-1.20210608.1.el8_1.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2020-24512"
},
{
"category": "external",
"summary": "RHBZ#1962722",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1962722"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2020-24512",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-24512"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-24512",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-24512"
}
],
"release_date": "2021-06-08T17:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2021-08-17T08:33:36+00:00",
"details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"BaseOS-8.1.0.Z.EUS:microcode_ctl-4:20190618-1.20210608.1.el8_1.src",
"BaseOS-8.1.0.Z.EUS:microcode_ctl-4:20190618-1.20210608.1.el8_1.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2021:3176"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 2.8,
"baseSeverity": "LOW",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N",
"version": "3.1"
},
"products": [
"BaseOS-8.1.0.Z.EUS:microcode_ctl-4:20190618-1.20210608.1.el8_1.src",
"BaseOS-8.1.0.Z.EUS:microcode_ctl-4:20190618-1.20210608.1.el8_1.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Low"
}
],
"title": "hw: observable timing discrepancy in some Intel Processors"
}
]
}
RHSA-2021:3255
Vulnerability from csaf_redhat - Published: 2021-08-24 10:01 - Updated: 2025-11-21 18:24Summary
Red Hat Security Advisory: microcode_ctl security, bug fix and enhancement update
Severity
Important
Notes
Topic: An update for microcode_ctl is now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
Details: The microcode_ctl packages provide microcode updates for Intel.
Security Fix(es):
* hw: Special Register Buffer Data Sampling (SRBDS) (CVE-2020-0543)
* hw: Vector Register Data Sampling (CVE-2020-0548)
* hw: L1D Cache Eviction Sampling (CVE-2020-0549)
* hw: vt-d related privilege escalation (CVE-2020-24489)
* hw: improper isolation of shared resources in some Intel Processors (CVE-2020-24511)
* hw: observable timing discrepancy in some Intel Processors (CVE-2020-24512)
* hw: Information disclosure issue in Intel SGX via RAPL interface (CVE-2020-8695)
* hw: Vector Register Leakage-Active (CVE-2020-8696)
* hw: Fast forward store predictor (CVE-2020-8698)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A new domain bypass transient execution attack known as Special Register Buffer Data Sampling (SRBDS) has been found. This flaw allows data values from special internal registers to be leaked by an attacker able to execute code on any core of the CPU. An unprivileged, local attacker can use this flaw to infer values returned by affected instructions known to be commonly used during cryptographic operations that rely on uniqueness, secrecy, or both.
6.5 (Medium)
Affected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
A flaw was found in Intel processors where a local attacker is able to gain information about registers used for vector calculations by observing register states from other processes running on the system. This results in a race condition where store buffers, which were not cleared, could be read by another process or a CPU sibling. The highest threat from this vulnerability is data confidentiality where an attacker could read arbitrary data as it passes through the processor.
CWE-200 - Exposure of Sensitive Information to an Unauthorized ActorAffected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Low
A microarchitectural timing flaw was found on some Intel processors. A corner case exists where data in-flight during the eviction process can end up in the “fill buffers” and not properly cleared by the MDS mitigations. The fill buffer contents (which were expected to be blank) can be inferred using MDS or TAA style attack methods to allow a local attacker to infer fill buffer values.
6.5 (Medium)
Affected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A vulnerability was found in Intel's implementation of RAPL (Running Average Power Limit). An attacker with a local account could query the power management functionality to intelligently infer SGX enclave computation values by measuring power usage in the RAPL subsystem.
5.1 (Medium)
Affected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
A flaw was found in the Intel Advanced Vector Extensions (AVX) implementation, where a local authenticated attacker with the ability to execute AVX instructions can gather the AVX register state from previous AVX executions. This vulnerability allows information disclosure of the AVX register state.
CWE-212 - Improper Removal of Sensitive Information Before Storage or TransferAffected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in the CPU microarchitecture where a local attacker is able to abuse a timing issue which may allow them to infer internal architectural state from previous executions on the CPU.
5.5 (Medium)
Affected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in Intel® VT-d products. Entries from the context cache on some types of context cache invalidations may not be properly invalidated which may allow an authenticated user to potentially enable escalation of privilege via local access. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
8.8 (High)
Affected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Important
Microcode misconfiguration in some Intel processors may cause EIBRS mitigation (CVE-2017-5715) to be incomplete. As a consequence, this issue may allow an authenticated user to potentially enable information disclosure via local access.
5.6 (Medium)
Affected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
Observable timing discrepancy in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.
CWE-200 - Exposure of Sensitive Information to an Unauthorized ActorAffected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.AUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.E4S:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.4.TUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Low
References
62 references
Acknowledgments
Intel
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"ids": [
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"text": "A new domain bypass transient execution attack known as Special Register Buffer Data Sampling (SRBDS) has been found. This flaw allows data values from special internal registers to be leaked by an attacker able to execute code on any core of the CPU. An unprivileged, local attacker can use this flaw to infer values returned by affected instructions known to be commonly used during cryptographic operations that rely on uniqueness, secrecy, or both.",
"title": "Vulnerability description"
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"title": "Vulnerability summary"
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"text": "Red Hat Product Security is aware of this issue. Updates will be released as they become available. For additional information, please refer to the Red Hat Knowledgebase article: https://access.redhat.com/solutions/5142691",
"title": "Statement"
},
{
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"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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},
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"cwe": {
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"name": "Exposure of Sensitive Information to an Unauthorized Actor"
},
"discovery_date": "2021-05-20T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1962702"
}
],
"notes": [
{
"category": "description",
"text": "Microcode misconfiguration in some Intel processors may cause EIBRS mitigation (CVE-2017-5715) to be incomplete. As a consequence, this issue may allow an authenticated user to potentially enable information disclosure via local access.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "hw: improper isolation of shared resources in some Intel Processors",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.src",
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]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2020-24511"
},
{
"category": "external",
"summary": "RHBZ#1962702",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1962702"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2020-24511",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-24511"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-24511",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-24511"
}
],
"release_date": "2021-06-08T17:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2021-08-24T10:01:08+00:00",
"details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
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],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2021:3255"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 5.6,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N",
"version": "3.1"
},
"products": [
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"7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64",
"7Server-7.4.AUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64",
"7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.src",
"7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.x86_64",
"7Server-7.4.E4S:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64",
"7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.src",
"7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64",
"7Server-7.4.TUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "hw: improper isolation of shared resources in some Intel Processors"
},
{
"acknowledgments": [
{
"names": [
"Intel"
]
}
],
"cve": "CVE-2020-24512",
"cwe": {
"id": "CWE-200",
"name": "Exposure of Sensitive Information to an Unauthorized Actor"
},
"discovery_date": "2021-05-20T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1962722"
}
],
"notes": [
{
"category": "description",
"text": "Observable timing discrepancy in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "hw: observable timing discrepancy in some Intel Processors",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.src",
"7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64",
"7Server-7.4.AUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64",
"7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.src",
"7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.x86_64",
"7Server-7.4.E4S:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64",
"7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.src",
"7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64",
"7Server-7.4.TUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2020-24512"
},
{
"category": "external",
"summary": "RHBZ#1962722",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1962722"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2020-24512",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-24512"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-24512",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-24512"
}
],
"release_date": "2021-06-08T17:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2021-08-24T10:01:08+00:00",
"details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.src",
"7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64",
"7Server-7.4.AUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64",
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"7Server-7.4.E4S:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64",
"7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.src",
"7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64",
"7Server-7.4.TUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2021:3255"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 2.8,
"baseSeverity": "LOW",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N",
"version": "3.1"
},
"products": [
"7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.src",
"7Server-7.4.AUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64",
"7Server-7.4.AUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64",
"7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.src",
"7Server-7.4.E4S:microcode_ctl-2:2.1-22.41.el7_4.x86_64",
"7Server-7.4.E4S:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64",
"7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.src",
"7Server-7.4.TUS:microcode_ctl-2:2.1-22.41.el7_4.x86_64",
"7Server-7.4.TUS:microcode_ctl-debuginfo-2:2.1-22.41.el7_4.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Low"
}
],
"title": "hw: observable timing discrepancy in some Intel Processors"
}
]
}
RHSA-2021:3317
Vulnerability from csaf_redhat - Published: 2021-08-31 08:30 - Updated: 2025-11-21 18:24Summary
Red Hat Security Advisory: microcode_ctl security, bug fix and enhancement update
Severity
Important
Notes
Topic: An update for microcode_ctl is now available for Red Hat Enterprise Linux
7.6 Advanced Update Support.
Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.
Details: * hw: Vector Register Data Sampling (CVE-2020-0548)
* hw: L1D Cache Eviction Sampling (CVE-2020-0549)
* hw: Special Register Buffer Data Sampling (SRBDS) (CVE-2020-0543)
* hw: Information disclosure issue in Intel SGX via RAPL interface
(CVE-2020-8695)
* hw: Vector Register Leakage-Active (CVE-2020-8696)
* hw: Fast forward store predictor (CVE-2020-8698)
* hw: vt-d related privilege escalation (CVE-2020-24489)
* hw: improper isolation of shared resources in some Intel Processors
(CVE-2020-24511)
* hw: observable timing discrepancy in some Intel Processors
(CVE-2020-24512)
For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A new domain bypass transient execution attack known as Special Register Buffer Data Sampling (SRBDS) has been found. This flaw allows data values from special internal registers to be leaked by an attacker able to execute code on any core of the CPU. An unprivileged, local attacker can use this flaw to infer values returned by affected instructions known to be commonly used during cryptographic operations that rely on uniqueness, secrecy, or both.
6.5 (Medium)
Affected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
A flaw was found in Intel processors where a local attacker is able to gain information about registers used for vector calculations by observing register states from other processes running on the system. This results in a race condition where store buffers, which were not cleared, could be read by another process or a CPU sibling. The highest threat from this vulnerability is data confidentiality where an attacker could read arbitrary data as it passes through the processor.
CWE-200 - Exposure of Sensitive Information to an Unauthorized ActorAffected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Low
A microarchitectural timing flaw was found on some Intel processors. A corner case exists where data in-flight during the eviction process can end up in the “fill buffers” and not properly cleared by the MDS mitigations. The fill buffer contents (which were expected to be blank) can be inferred using MDS or TAA style attack methods to allow a local attacker to infer fill buffer values.
6.5 (Medium)
Affected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A vulnerability was found in Intel's implementation of RAPL (Running Average Power Limit). An attacker with a local account could query the power management functionality to intelligently infer SGX enclave computation values by measuring power usage in the RAPL subsystem.
5.1 (Medium)
Affected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
A flaw was found in the Intel Advanced Vector Extensions (AVX) implementation, where a local authenticated attacker with the ability to execute AVX instructions can gather the AVX register state from previous AVX executions. This vulnerability allows information disclosure of the AVX register state.
CWE-212 - Improper Removal of Sensitive Information Before Storage or TransferAffected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in the CPU microarchitecture where a local attacker is able to abuse a timing issue which may allow them to infer internal architectural state from previous executions on the CPU.
5.5 (Medium)
Affected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
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| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
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| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in Intel® VT-d products. Entries from the context cache on some types of context cache invalidations may not be properly invalidated which may allow an authenticated user to potentially enable escalation of privilege via local access. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
8.8 (High)
Affected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Important
Microcode misconfiguration in some Intel processors may cause EIBRS mitigation (CVE-2017-5715) to be incomplete. As a consequence, this issue may allow an authenticated user to potentially enable information disclosure via local access.
5.6 (Medium)
Affected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
Observable timing discrepancy in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.
CWE-200 - Exposure of Sensitive Information to an Unauthorized ActorAffected products
Fixed
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.AUS:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.E4S:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-2:2.1-47.23.el7_6.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.6.TUS:microcode_ctl-debuginfo-2:2.1-47.23.el7_6.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Low
References
62 references
Acknowledgments
Intel
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}
RHSA-2021:3322
Vulnerability from csaf_redhat - Published: 2021-08-31 08:15 - Updated: 2025-11-21 18:24Summary
Red Hat Security Advisory: microcode_ctl security, bug fix and enhancement update
Severity
Important
Notes
Topic: An update for microcode_ctl is now available for Red Hat Enterprise Linux 7.3 Advanced Update Support.
Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.
Details: The microcode_ctl packages provide microcode updates for Intel.
Security Fix(es):
* hw: Vector Register Data Sampling (CVE-2020-0548)
* hw: L1D Cache Eviction Sampling (CVE-2020-0549)
* hw: Special Register Buffer Data Sampling (SRBDS) (CVE-2020-0543)
* hw: Information disclosure issue in Intel SGX via RAPL interface
(CVE-2020-8695)
* hw: Vector Register Leakage-Active (CVE-2020-8696)
* hw: Fast forward store predictor (CVE-2020-8698)
* hw: vt-d related privilege escalation (CVE-2020-24489)
* hw: improper isolation of shared resources in some Intel Processors
(CVE-2020-24511)
* hw: observable timing discrepancy in some Intel Processors
(CVE-2020-24512)
For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A new domain bypass transient execution attack known as Special Register Buffer Data Sampling (SRBDS) has been found. This flaw allows data values from special internal registers to be leaked by an attacker able to execute code on any core of the CPU. An unprivileged, local attacker can use this flaw to infer values returned by affected instructions known to be commonly used during cryptographic operations that rely on uniqueness, secrecy, or both.
6.5 (Medium)
Affected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-2:2.1-16.42.el7_3.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-2:2.1-16.42.el7_3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-debuginfo-2:2.1-16.42.el7_3.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
A flaw was found in Intel processors where a local attacker is able to gain information about registers used for vector calculations by observing register states from other processes running on the system. This results in a race condition where store buffers, which were not cleared, could be read by another process or a CPU sibling. The highest threat from this vulnerability is data confidentiality where an attacker could read arbitrary data as it passes through the processor.
CWE-200 - Exposure of Sensitive Information to an Unauthorized ActorAffected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-2:2.1-16.42.el7_3.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-2:2.1-16.42.el7_3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-debuginfo-2:2.1-16.42.el7_3.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Low
A microarchitectural timing flaw was found on some Intel processors. A corner case exists where data in-flight during the eviction process can end up in the “fill buffers” and not properly cleared by the MDS mitigations. The fill buffer contents (which were expected to be blank) can be inferred using MDS or TAA style attack methods to allow a local attacker to infer fill buffer values.
6.5 (Medium)
Affected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-2:2.1-16.42.el7_3.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-2:2.1-16.42.el7_3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-debuginfo-2:2.1-16.42.el7_3.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A vulnerability was found in Intel's implementation of RAPL (Running Average Power Limit). An attacker with a local account could query the power management functionality to intelligently infer SGX enclave computation values by measuring power usage in the RAPL subsystem.
5.1 (Medium)
Affected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-2:2.1-16.42.el7_3.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-2:2.1-16.42.el7_3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-debuginfo-2:2.1-16.42.el7_3.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
A flaw was found in the Intel Advanced Vector Extensions (AVX) implementation, where a local authenticated attacker with the ability to execute AVX instructions can gather the AVX register state from previous AVX executions. This vulnerability allows information disclosure of the AVX register state.
CWE-212 - Improper Removal of Sensitive Information Before Storage or TransferAffected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-2:2.1-16.42.el7_3.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-2:2.1-16.42.el7_3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-debuginfo-2:2.1-16.42.el7_3.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in the CPU microarchitecture where a local attacker is able to abuse a timing issue which may allow them to infer internal architectural state from previous executions on the CPU.
5.5 (Medium)
Affected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-2:2.1-16.42.el7_3.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-2:2.1-16.42.el7_3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-debuginfo-2:2.1-16.42.el7_3.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in Intel® VT-d products. Entries from the context cache on some types of context cache invalidations may not be properly invalidated which may allow an authenticated user to potentially enable escalation of privilege via local access. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
8.8 (High)
Affected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-2:2.1-16.42.el7_3.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-2:2.1-16.42.el7_3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-debuginfo-2:2.1-16.42.el7_3.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Important
Microcode misconfiguration in some Intel processors may cause EIBRS mitigation (CVE-2017-5715) to be incomplete. As a consequence, this issue may allow an authenticated user to potentially enable information disclosure via local access.
5.6 (Medium)
Affected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-2:2.1-16.42.el7_3.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-2:2.1-16.42.el7_3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-debuginfo-2:2.1-16.42.el7_3.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
Observable timing discrepancy in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.
CWE-200 - Exposure of Sensitive Information to an Unauthorized ActorAffected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-2:2.1-16.42.el7_3.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-2:2.1-16.42.el7_3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.3.AUS:microcode_ctl-debuginfo-2:2.1-16.42.el7_3.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Low
References
62 references
Acknowledgments
Intel
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{
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"ids": [
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"title": "Vulnerability description"
},
{
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"text": "hw: improper isolation of shared resources in some Intel Processors",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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"ids": [
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"notes": [
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"text": "Observable timing discrepancy in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "hw: observable timing discrepancy in some Intel Processors",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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"summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-24512",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-24512"
}
],
"release_date": "2021-06-08T17:00:00+00:00",
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"date": "2021-08-31T08:15:28+00:00",
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RHSA-2021:3323
Vulnerability from csaf_redhat - Published: 2021-08-31 07:59 - Updated: 2025-11-21 18:24Summary
Red Hat Security Advisory: microcode_ctl security, bug fix and enhancement update
Severity
Important
Notes
Topic: An update for microcode_ctl is now available for Red Hat Enterprise Linux 7.2 Advanced Update Support.
Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.
Details: The microcode_ctl packages provide microcode updates for Intel.
Security Fix(es):
* hw: Vector Register Data Sampling (CVE-2020-0548)
* hw: L1D Cache Eviction Sampling (CVE-2020-0549)
* hw: Special Register Buffer Data Sampling (SRBDS) (CVE-2020-0543)
* hw: Information disclosure issue in Intel SGX via RAPL interface (CVE-2020-8695)
* hw: Vector Register Leakage-Active (CVE-2020-8696)
* hw: Fast forward store predictor (CVE-2020-8698)
* hw: vt-d related privilege escalation (CVE-2020-24489)
* hw: improper isolation of shared resources in some Intel Processors (CVE-2020-24511)
* hw: observable timing discrepancy in some Intel Processors (CVE-2020-24512)
For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A new domain bypass transient execution attack known as Special Register Buffer Data Sampling (SRBDS) has been found. This flaw allows data values from special internal registers to be leaked by an attacker able to execute code on any core of the CPU. An unprivileged, local attacker can use this flaw to infer values returned by affected instructions known to be commonly used during cryptographic operations that rely on uniqueness, secrecy, or both.
6.5 (Medium)
Affected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-2:2.1-12.39.el7_2.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-2:2.1-12.39.el7_2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-debuginfo-2:2.1-12.39.el7_2.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
A flaw was found in Intel processors where a local attacker is able to gain information about registers used for vector calculations by observing register states from other processes running on the system. This results in a race condition where store buffers, which were not cleared, could be read by another process or a CPU sibling. The highest threat from this vulnerability is data confidentiality where an attacker could read arbitrary data as it passes through the processor.
CWE-200 - Exposure of Sensitive Information to an Unauthorized ActorAffected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-2:2.1-12.39.el7_2.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-2:2.1-12.39.el7_2.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-debuginfo-2:2.1-12.39.el7_2.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Low
A microarchitectural timing flaw was found on some Intel processors. A corner case exists where data in-flight during the eviction process can end up in the “fill buffers” and not properly cleared by the MDS mitigations. The fill buffer contents (which were expected to be blank) can be inferred using MDS or TAA style attack methods to allow a local attacker to infer fill buffer values.
6.5 (Medium)
Affected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-2:2.1-12.39.el7_2.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-2:2.1-12.39.el7_2.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-debuginfo-2:2.1-12.39.el7_2.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A vulnerability was found in Intel's implementation of RAPL (Running Average Power Limit). An attacker with a local account could query the power management functionality to intelligently infer SGX enclave computation values by measuring power usage in the RAPL subsystem.
5.1 (Medium)
Affected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-2:2.1-12.39.el7_2.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-2:2.1-12.39.el7_2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-debuginfo-2:2.1-12.39.el7_2.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
A flaw was found in the Intel Advanced Vector Extensions (AVX) implementation, where a local authenticated attacker with the ability to execute AVX instructions can gather the AVX register state from previous AVX executions. This vulnerability allows information disclosure of the AVX register state.
CWE-212 - Improper Removal of Sensitive Information Before Storage or TransferAffected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-2:2.1-12.39.el7_2.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-2:2.1-12.39.el7_2.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-debuginfo-2:2.1-12.39.el7_2.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in the CPU microarchitecture where a local attacker is able to abuse a timing issue which may allow them to infer internal architectural state from previous executions on the CPU.
5.5 (Medium)
Affected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-2:2.1-12.39.el7_2.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-2:2.1-12.39.el7_2.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-debuginfo-2:2.1-12.39.el7_2.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in Intel® VT-d products. Entries from the context cache on some types of context cache invalidations may not be properly invalidated which may allow an authenticated user to potentially enable escalation of privilege via local access. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
8.8 (High)
Affected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-2:2.1-12.39.el7_2.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-2:2.1-12.39.el7_2.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-debuginfo-2:2.1-12.39.el7_2.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Important
Microcode misconfiguration in some Intel processors may cause EIBRS mitigation (CVE-2017-5715) to be incomplete. As a consequence, this issue may allow an authenticated user to potentially enable information disclosure via local access.
5.6 (Medium)
Affected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-2:2.1-12.39.el7_2.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-2:2.1-12.39.el7_2.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-debuginfo-2:2.1-12.39.el7_2.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
Observable timing discrepancy in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.
CWE-200 - Exposure of Sensitive Information to an Unauthorized ActorAffected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-2:2.1-12.39.el7_2.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-2:2.1-12.39.el7_2.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-7.2.AUS:microcode_ctl-debuginfo-2:2.1-12.39.el7_2.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Low
References
62 references
Acknowledgments
Intel
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"url": "https://blogs.intel.com/technology/2020/06/ipas-security-advisories-for-june-2020/#gs.6uyhri"
},
{
"category": "external",
"summary": "https://software.intel.com/security-software-guidance/insights/deep-dive-special-register-buffer-data-sampling",
"url": "https://software.intel.com/security-software-guidance/insights/deep-dive-special-register-buffer-data-sampling"
},
{
"category": "external",
"summary": "https://xenbits.xen.org/xsa/advisory-320.html",
"url": "https://xenbits.xen.org/xsa/advisory-320.html"
}
],
"release_date": "2020-06-09T17:00:00+00:00",
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"category": "vendor_fix",
"date": "2021-08-31T07:59:36+00:00",
"details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
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],
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"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2021:3323"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options don\u0027t meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
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"attackVector": "LOCAL",
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"baseScore": 6.5,
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"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
"version": "3.1"
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]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "hw: Special Register Buffer Data Sampling (SRBDS)"
},
{
"cve": "CVE-2020-0548",
"cwe": {
"id": "CWE-200",
"name": "Exposure of Sensitive Information to an Unauthorized Actor"
},
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},
{
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"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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{
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{
"category": "external",
"summary": "https://cacheoutattack.com/CacheOut.pdf",
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"integrityImpact": "NONE",
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}
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"title": "Vulnerability description"
},
{
"category": "summary",
"text": "hw: L1D Cache Eviction Sampling",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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{
"category": "external",
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{
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"url": "https://cacheoutattack.com/CacheOut.pdf"
},
{
"category": "external",
"summary": "https://software.intel.com/security-software-guidance/software-guidance/l1d-eviction-sampling",
"url": "https://software.intel.com/security-software-guidance/software-guidance/l1d-eviction-sampling"
}
],
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"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
"version": "3.0"
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"details": "Moderate"
}
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"title": "hw: L1D Cache Eviction Sampling"
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{
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{
"names": [
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]
}
],
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},
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"ids": [
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"text": "1828583"
}
],
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"text": "A vulnerability was found in Intel\u0027s implementation of RAPL (Running Average Power Limit). An attacker with a local account could query the power management functionality to intelligently infer SGX enclave computation values by measuring power usage in the RAPL subsystem.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "hw: Information disclosure issue in Intel SGX via RAPL interface",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8695"
},
{
"category": "external",
"summary": "https://en.wikipedia.org/wiki/Power_analysis",
"url": "https://en.wikipedia.org/wiki/Power_analysis"
},
{
"category": "external",
"summary": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00389.html",
"url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00389.html"
}
],
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},
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},
{
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"attackVector": "LOCAL",
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"baseScore": 5.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
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},
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"ids": [
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"title": "Vulnerability description"
},
{
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"text": "hw: Vector Register Leakage-Active",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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"url": "https://www.cve.org/CVERecord?id=CVE-2020-8696"
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8696"
},
{
"category": "external",
"summary": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00381.html",
"url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00381.html"
}
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"details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
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"baseScore": 2.8,
"baseSeverity": "LOW",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
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"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N",
"version": "3.1"
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"title": "hw: Vector Register Leakage-Active"
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{
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}
],
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RHSA-2021:3364
Vulnerability from csaf_redhat - Published: 2021-08-31 09:26 - Updated: 2025-11-21 18:24Summary
Red Hat Security Advisory: microcode_ctl security, bug fix and enhancement update
Severity
Important
Notes
Topic: An update for microcode_ctl is now available for Red Hat Enterprise Linux 8.2 Extended User Support.
Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.
Details: The microcode_ctl packages provide microcode updates for Intel.
Security Fix(es):
* hw: Vector Register Data Sampling (CVE-2020-0548)
* hw: L1D Cache Eviction Sampling (CVE-2020-0549)
* hw: Special Register Buffer Data Sampling (SRBDS) (CVE-2020-0543)
* hw: Information disclosure issue in Intel SGX via RAPL interface
(CVE-2020-8695)
* hw: Vector Register Leakage-Active (CVE-2020-8696)
* hw: Fast forward store predictor (CVE-2020-8698)
* hw: vt-d related privilege escalation (CVE-2020-24489)
* hw: improper isolation of shared resources in some Intel Processors
(CVE-2020-24511)
* hw: observable timing discrepancy in some Intel Processors
(CVE-2020-24512)
For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A new domain bypass transient execution attack known as Special Register Buffer Data Sampling (SRBDS) has been found. This flaw allows data values from special internal registers to be leaked by an attacker able to execute code on any core of the CPU. An unprivileged, local attacker can use this flaw to infer values returned by affected instructions known to be commonly used during cryptographic operations that rely on uniqueness, secrecy, or both.
6.5 (Medium)
Affected products
Threats
Impact
Moderate
A flaw was found in Intel processors where a local attacker is able to gain information about registers used for vector calculations by observing register states from other processes running on the system. This results in a race condition where store buffers, which were not cleared, could be read by another process or a CPU sibling. The highest threat from this vulnerability is data confidentiality where an attacker could read arbitrary data as it passes through the processor.
CWE-200 - Exposure of Sensitive Information to an Unauthorized ActorAffected products
Threats
Impact
Low
A microarchitectural timing flaw was found on some Intel processors. A corner case exists where data in-flight during the eviction process can end up in the “fill buffers” and not properly cleared by the MDS mitigations. The fill buffer contents (which were expected to be blank) can be inferred using MDS or TAA style attack methods to allow a local attacker to infer fill buffer values.
6.5 (Medium)
Affected products
Threats
Impact
Moderate
A vulnerability was found in Intel's implementation of RAPL (Running Average Power Limit). An attacker with a local account could query the power management functionality to intelligently infer SGX enclave computation values by measuring power usage in the RAPL subsystem.
5.1 (Medium)
Affected products
Threats
Impact
Moderate
A flaw was found in the Intel Advanced Vector Extensions (AVX) implementation, where a local authenticated attacker with the ability to execute AVX instructions can gather the AVX register state from previous AVX executions. This vulnerability allows information disclosure of the AVX register state.
CWE-212 - Improper Removal of Sensitive Information Before Storage or TransferAffected products
Threats
Impact
Moderate
A flaw was found in the CPU microarchitecture where a local attacker is able to abuse a timing issue which may allow them to infer internal architectural state from previous executions on the CPU.
5.5 (Medium)
Affected products
Threats
Impact
Moderate
A flaw was found in Intel® VT-d products. Entries from the context cache on some types of context cache invalidations may not be properly invalidated which may allow an authenticated user to potentially enable escalation of privilege via local access. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
8.8 (High)
Affected products
Threats
Impact
Important
Microcode misconfiguration in some Intel processors may cause EIBRS mitigation (CVE-2017-5715) to be incomplete. As a consequence, this issue may allow an authenticated user to potentially enable information disclosure via local access.
5.6 (Medium)
Affected products
Threats
Impact
Moderate
Observable timing discrepancy in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.
CWE-200 - Exposure of Sensitive Information to an Unauthorized ActorAffected products
Threats
Impact
Low
References
63 references
Acknowledgments
Intel
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"BaseOS-8.2.0.Z.EUS:microcode_ctl-4:20191115-4.20210608.1.el8_2.src",
"BaseOS-8.2.0.Z.EUS:microcode_ctl-4:20191115-4.20210608.1.el8_2.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2021:3364"
},
{
"category": "workaround",
"details": "Until a firmware update and reboot can be applied, the attack vector can be reduced by limiting read access to the sysfs attributes that export this functionality to userspace. \n\nThe command:\n~~~\nsudo chmod 400 /sys/class/powercap/intel_rapl/*/energy_uj\n~~~\nWill do this for the current boot, it will need to be scripted to run at each boot to remain persistent across reboots.",
"product_ids": [
"BaseOS-8.2.0.Z.EUS:microcode_ctl-4:20191115-4.20210608.1.el8_2.src",
"BaseOS-8.2.0.Z.EUS:microcode_ctl-4:20191115-4.20210608.1.el8_2.x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 5.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"products": [
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"BaseOS-8.2.0.Z.EUS:microcode_ctl-4:20191115-4.20210608.1.el8_2.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "hw: Information disclosure issue in Intel SGX via RAPL interface"
},
{
"acknowledgments": [
{
"names": [
"Intel"
]
}
],
"cve": "CVE-2020-8696",
"cwe": {
"id": "CWE-212",
"name": "Improper Removal of Sensitive Information Before Storage or Transfer"
},
"discovery_date": "2020-10-22T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1890355"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Intel Advanced Vector Extensions (AVX) implementation, where a local authenticated attacker with the ability to execute AVX instructions can gather the AVX register state from previous AVX executions. This vulnerability allows information disclosure of the AVX register state.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "hw: Vector Register Leakage-Active",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"BaseOS-8.2.0.Z.EUS:microcode_ctl-4:20191115-4.20210608.1.el8_2.src",
"BaseOS-8.2.0.Z.EUS:microcode_ctl-4:20191115-4.20210608.1.el8_2.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2020-8696"
},
{
"category": "external",
"summary": "RHBZ#1890355",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1890355"
},
{
"category": "external",
"summary": "RHSB-5569051",
"url": "https://access.redhat.com/articles/5569051"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2020-8696",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-8696"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-8696",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8696"
},
{
"category": "external",
"summary": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00381.html",
"url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00381.html"
}
],
"release_date": "2020-11-10T13:55:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2021-08-31T09:26:30+00:00",
"details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
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"BaseOS-8.2.0.Z.EUS:microcode_ctl-4:20191115-4.20210608.1.el8_2.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2021:3364"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 2.8,
"baseSeverity": "LOW",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N",
"version": "3.1"
},
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]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "hw: Vector Register Leakage-Active"
},
{
"acknowledgments": [
{
"names": [
"Intel"
]
}
],
"cve": "CVE-2020-8698",
"cwe": {
"id": "CWE-212",
"name": "Improper Removal of Sensitive Information Before Storage or Transfer"
},
"discovery_date": "2020-10-22T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1890356"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the CPU microarchitecture where a local attacker is able to abuse a timing issue which may allow them to infer internal architectural state from previous executions on the CPU.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "hw: Fast forward store predictor",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
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"BaseOS-8.2.0.Z.EUS:microcode_ctl-4:20191115-4.20210608.1.el8_2.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2020-8698"
},
{
"category": "external",
"summary": "RHBZ#1890356",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1890356"
},
{
"category": "external",
"summary": "RHSB-5569051",
"url": "https://access.redhat.com/articles/5569051"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2020-8698",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-8698"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-8698",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8698"
},
{
"category": "external",
"summary": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00381.html",
"url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00381.html"
}
],
"release_date": "2020-11-10T13:55:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2021-08-31T09:26:30+00:00",
"details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
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"BaseOS-8.2.0.Z.EUS:microcode_ctl-4:20191115-4.20210608.1.el8_2.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2021:3364"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"products": [
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"BaseOS-8.2.0.Z.EUS:microcode_ctl-4:20191115-4.20210608.1.el8_2.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "hw: Fast forward store predictor"
},
{
"acknowledgments": [
{
"names": [
"Intel"
]
}
],
"cve": "CVE-2020-24489",
"cwe": {
"id": "CWE-459",
"name": "Incomplete Cleanup"
},
"discovery_date": "2021-05-20T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1962650"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Intel\u00ae VT-d products. Entries from the context cache on some types of context cache invalidations may not be properly invalidated which may allow an authenticated user to potentially enable escalation of privilege via local access. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "hw: vt-d related privilege escalation",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
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"BaseOS-8.2.0.Z.EUS:microcode_ctl-4:20191115-4.20210608.1.el8_2.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2020-24489"
},
{
"category": "external",
"summary": "RHBZ#1962650",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1962650"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2020-24489",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-24489"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-24489",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-24489"
}
],
"release_date": "2021-06-08T17:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2021-08-31T09:26:30+00:00",
"details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"BaseOS-8.2.0.Z.EUS:microcode_ctl-4:20191115-4.20210608.1.el8_2.src",
"BaseOS-8.2.0.Z.EUS:microcode_ctl-4:20191115-4.20210608.1.el8_2.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2021:3364"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
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"BaseOS-8.2.0.Z.EUS:microcode_ctl-4:20191115-4.20210608.1.el8_2.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "hw: vt-d related privilege escalation"
},
{
"acknowledgments": [
{
"names": [
"Intel"
]
}
],
"cve": "CVE-2020-24511",
"cwe": {
"id": "CWE-200",
"name": "Exposure of Sensitive Information to an Unauthorized Actor"
},
"discovery_date": "2021-05-20T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1962702"
}
],
"notes": [
{
"category": "description",
"text": "Microcode misconfiguration in some Intel processors may cause EIBRS mitigation (CVE-2017-5715) to be incomplete. As a consequence, this issue may allow an authenticated user to potentially enable information disclosure via local access.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "hw: improper isolation of shared resources in some Intel Processors",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2020-24511"
},
{
"category": "external",
"summary": "RHBZ#1962702",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1962702"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2020-24511",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-24511"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-24511",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-24511"
}
],
"release_date": "2021-06-08T17:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2021-08-31T09:26:30+00:00",
"details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
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"BaseOS-8.2.0.Z.EUS:microcode_ctl-4:20191115-4.20210608.1.el8_2.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2021:3364"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 5.6,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N",
"version": "3.1"
},
"products": [
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"BaseOS-8.2.0.Z.EUS:microcode_ctl-4:20191115-4.20210608.1.el8_2.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "hw: improper isolation of shared resources in some Intel Processors"
},
{
"acknowledgments": [
{
"names": [
"Intel"
]
}
],
"cve": "CVE-2020-24512",
"cwe": {
"id": "CWE-200",
"name": "Exposure of Sensitive Information to an Unauthorized Actor"
},
"discovery_date": "2021-05-20T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1962722"
}
],
"notes": [
{
"category": "description",
"text": "Observable timing discrepancy in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "hw: observable timing discrepancy in some Intel Processors",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"BaseOS-8.2.0.Z.EUS:microcode_ctl-4:20191115-4.20210608.1.el8_2.src",
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]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2020-24512"
},
{
"category": "external",
"summary": "RHBZ#1962722",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1962722"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2020-24512",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-24512"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-24512",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-24512"
}
],
"release_date": "2021-06-08T17:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2021-08-31T09:26:30+00:00",
"details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"BaseOS-8.2.0.Z.EUS:microcode_ctl-4:20191115-4.20210608.1.el8_2.src",
"BaseOS-8.2.0.Z.EUS:microcode_ctl-4:20191115-4.20210608.1.el8_2.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2021:3364"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 2.8,
"baseSeverity": "LOW",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N",
"version": "3.1"
},
"products": [
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"BaseOS-8.2.0.Z.EUS:microcode_ctl-4:20191115-4.20210608.1.el8_2.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Low"
}
],
"title": "hw: observable timing discrepancy in some Intel Processors"
}
]
}
Loading…
Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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