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CERTFR-2021-AVI-149
Vulnerability from certfr_avis - Published: 2021-02-26 - Updated: 2021-02-26
De multiples vulnérabilités ont été découvertes dans le noyau Linux d'Ubuntu. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et un contournement de la politique de sécurité.
Solution
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
NoneImpacted products
References
| Title | Publication Time | Tags | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Ubuntu 16.04 LTS",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
},
{
"description": "Ubuntu 20.10",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
},
{
"description": "Ubuntu 18.04 LTS",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
},
{
"description": "Ubuntu 20.04 LTS",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
},
{
"description": "Ubuntu 14.04 ESM",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
}
],
"affected_systems_content": null,
"content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
"cves": [
{
"name": "CVE-2020-29368",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-29368"
},
{
"name": "CVE-2020-28974",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-28974"
},
{
"name": "CVE-2020-28915",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-28915"
},
{
"name": "CVE-2020-28588",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-28588"
},
{
"name": "CVE-2020-27777",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-27777"
},
{
"name": "CVE-2020-27152",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-27152"
},
{
"name": "CVE-2020-29660",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-29660"
},
{
"name": "CVE-2020-29569",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-29569"
},
{
"name": "CVE-2020-29661",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-29661"
},
{
"name": "CVE-2020-25284",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-25284"
},
{
"name": "CVE-2020-25704",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-25704"
},
{
"name": "CVE-2020-25212",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-25212"
},
{
"name": "CVE-2020-27835",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-27835"
},
{
"name": "CVE-2020-14314",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-14314"
},
{
"name": "CVE-2020-27830",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-27830"
},
{
"name": "CVE-2020-29568",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-29568"
},
{
"name": "CVE-2020-27815",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-27815"
},
{
"name": "CVE-2020-24490",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-24490"
},
{
"name": "CVE-2020-29371",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-29371"
},
{
"name": "CVE-2020-35508",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-35508"
},
{
"name": "CVE-2020-28941",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-28941"
},
{
"name": "CVE-2020-15437",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-15437"
},
{
"name": "CVE-2020-29374",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-29374"
},
{
"name": "CVE-2020-25656",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-25656"
},
{
"name": "CVE-2020-25669",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-25669"
},
{
"name": "CVE-2020-28374",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-28374"
},
{
"name": "CVE-2020-25668",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-25668"
},
{
"name": "CVE-2020-15436",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-15436"
},
{
"name": "CVE-2021-20177",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-20177"
},
{
"name": "CVE-2020-10135",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-10135"
},
{
"name": "CVE-2020-29369",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-29369"
},
{
"name": "CVE-2020-25643",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-25643"
},
{
"name": "CVE-2020-27675",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-27675"
},
{
"name": "CVE-2020-25641",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-25641"
},
{
"name": "CVE-2020-27673",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-27673"
}
],
"initial_release_date": "2021-02-26T00:00:00",
"last_revision_date": "2021-02-26T00:00:00",
"links": [],
"reference": "CERTFR-2021-AVI-149",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2021-02-26T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
},
{
"description": "Atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans le noyau Linux\nd\u0027Ubuntu. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer\nune ex\u00e9cution de code arbitraire \u00e0 distance, un d\u00e9ni de service \u00e0\ndistance et un contournement de la politique de s\u00e9curit\u00e9.\n",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans le noyau Linux d\u0027Ubuntu",
"vendor_advisories": [
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-4751-1 du 25 f\u00e9vrier 2021",
"url": "https://ubuntu.com/security/notices/USN-4751-1"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-4752-1 du 25 f\u00e9vrier 2021",
"url": "https://ubuntu.com/security/notices/USN-4752-1"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-4749-1 du 25 f\u00e9vrier 2021",
"url": "https://ubuntu.com/security/notices/USN-4749-1"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-4750-1 du 25 f\u00e9vrier 2021",
"url": "https://ubuntu.com/security/notices/USN-4750-1"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-4748-1 du 25 f\u00e9vrier 2021",
"url": "https://ubuntu.com/security/notices/USN-4748-1"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-4753-1 du 25 f\u00e9vrier 2021",
"url": "https://ubuntu.com/security/notices/USN-4753-1"
}
]
}
CVE-2020-28374 (GCVE-0-2020-28374)
Vulnerability from cvelistv5 – Published: 2021-01-13 03:07 – Updated: 2024-08-04 16:33
VLAI
EPSS
Summary
In drivers/target/target_core_xcopy.c in the Linux kernel before 5.10.7, insufficient identifier checking in the LIO SCSI target code can be used by remote attackers to read or write files via directory traversal in an XCOPY request, aka CID-2896c93811e3. For example, an attack can occur over a network if the attacker has access to one iSCSI LUN. The attacker gains control over file access because I/O operations are proxied via an attacker-selected backstore.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
15 references
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CVE-2020-28588 (GCVE-0-2020-28588)
Vulnerability from cvelistv5 – Published: 2021-05-10 18:54 – Updated: 2024-08-04 16:40
VLAI
EPSS
Summary
An information disclosure vulnerability exists in the /proc/pid/syscall functionality of Linux Kernel 5.1 Stable and 5.4.66. More specifically, this issue has been introduced in v5.1-rc4 (commit 631b7abacd02b88f4b0795c08b54ad4fc3e7c7c0) and is still present in v5.10-rc4, so it’s likely that all versions in between are affected. An attacker can read /proc/pid/syscall to trigger this vulnerability, which leads to the kernel leaking memory contents.
Severity
4 (Medium)
CWE
- CWE-681 - Incorrect Conversion between Numeric Types
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://talosintelligence.com/vulnerability_repor… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Linux Kernel |
Affected:
Linux Kernel v5.10-rc4,Linux Kernel v5.4.66,Linux Kernel v5.9.8
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CVE-2020-28915 (GCVE-0-2020-28915)
Vulnerability from cvelistv5 – Published: 2020-11-18 07:59 – Updated: 2024-08-04 16:40
VLAI
EPSS
Summary
A buffer over-read (at the framebuffer layer) in the fbcon code in the Linux kernel before 5.8.15 could be used by local attackers to read kernel memory, aka CID-6735b4632def.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://cdn.kernel.org/pub/linux/kernel/v5.x/Chan… | x_refsource_MISC |
| https://git.kernel.org/pub/scm/linux/kernel/git/t… | x_refsource_MISC |
| https://syzkaller.appspot.com/bug?id=08b8be45afea… | x_refsource_MISC |
| https://bugzilla.suse.com/show_bug.cgi?id=1178886 | x_refsource_MISC |
| https://git.kernel.org/pub/scm/linux/kernel/git/t… | x_refsource_MISC |
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CVE-2020-28941 (GCVE-0-2020-28941)
Vulnerability from cvelistv5 – Published: 2020-11-19 15:23 – Updated: 2026-05-29 16:06
VLAI
EPSS
Summary
An issue was discovered in drivers/accessibility/speakup/spk_ttyio.c in the Linux kernel through 5.9.9. Local attackers on systems with the speakup driver could cause a local denial of service attack, aka CID-d41227544427. This occurs because of an invalid free when the line discipline is used more than once.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-763 - Release of Invalid Pointer or Reference
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://git.kernel.org/pub/scm/linux/kernel/git/g… | x_refsource_MISC |
| https://www.openwall.com/lists/oss-security/2020/… | x_refsource_MISC |
| https://github.com/torvalds/linux/commit/d4122754… | x_refsource_MISC |
| https://git.kernel.org/cgit/linux/kernel/git/torv… | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2020/11/19/5 | mailing-listx_refsource_MLIST |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.debian.org/debian-lts-announce/2020… | mailing-listx_refsource_MLIST |
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CVE-2020-28974 (GCVE-0-2020-28974)
Vulnerability from cvelistv5 – Published: 2020-11-20 17:49 – Updated: 2024-08-04 16:48
VLAI
EPSS
Summary
A slab-out-of-bounds read in fbcon in the Linux kernel before 5.9.7 could be used by local attackers to read privileged information or potentially crash the kernel, aka CID-3c4e0dff2095. This occurs because KD_FONT_OP_COPY in drivers/tty/vt/vt.c can be used for manipulations such as font height.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
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|---|---|
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| https://lists.debian.org/debian-lts-announce/2020… | mailing-listx_refsource_MLIST |
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CVE-2020-29368 (GCVE-0-2020-29368)
Vulnerability from cvelistv5 – Published: 2020-11-28 06:20 – Updated: 2024-08-04 16:48
VLAI
EPSS
Summary
An issue was discovered in __split_huge_pmd in mm/huge_memory.c in the Linux kernel before 5.7.5. The copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check, aka CID-c444eb564fb1.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://cdn.kernel.org/pub/linux/kernel/v5.x/Chan… | x_refsource_MISC |
| https://git.kernel.org/pub/scm/linux/kernel/git/t… | x_refsource_MISC |
| https://bugs.chromium.org/p/project-zero/issues/d… | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2021010… | x_refsource_CONFIRM |
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CVE-2020-29369 (GCVE-0-2020-29369)
Vulnerability from cvelistv5 – Published: 2020-11-28 06:20 – Updated: 2024-08-04 16:48
VLAI
EPSS
Summary
An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is a race condition between certain expand functions (expand_downwards and expand_upwards) and page-table free operations from an munmap call, aka CID-246c320a8cfe.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://cdn.kernel.org/pub/linux/kernel/v5.x/Chan… | x_refsource_MISC |
| https://git.kernel.org/pub/scm/linux/kernel/git/t… | x_refsource_MISC |
| https://bugs.chromium.org/p/project-zero/issues/d… | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2021011… | x_refsource_CONFIRM |
| http://www.openwall.com/lists/oss-security/2021/02/10/6 | mailing-listx_refsource_MLIST |
| http://www.openwall.com/lists/oss-security/2021/02/19/8 | mailing-listx_refsource_MLIST |
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CVE-2020-29371 (GCVE-0-2020-29371)
Vulnerability from cvelistv5 – Published: 2020-11-28 06:19 – Updated: 2024-08-04 16:48
VLAI
EPSS
Summary
An issue was discovered in romfs_dev_read in fs/romfs/storage.c in the Linux kernel before 5.8.4. Uninitialized memory leaks to userspace, aka CID-bcf85fcedfdd.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://cdn.kernel.org/pub/linux/kernel/v5.x/Chan… | x_refsource_MISC |
| https://git.kernel.org/pub/scm/linux/kernel/git/t… | x_refsource_MISC |
| https://git.kernel.org/pub/scm/linux/kernel/git/t… | x_refsource_MISC |
| https://bugs.chromium.org/p/project-zero/issues/d… | x_refsource_MISC |
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CVE-2020-29374 (GCVE-0-2020-29374)
Vulnerability from cvelistv5 – Published: 2020-11-28 06:18 – Updated: 2024-08-04 16:48
VLAI
EPSS
Summary
An issue was discovered in the Linux kernel before 5.7.3, related to mm/gup.c and mm/huge_memory.c. The get_user_pages (aka gup) implementation, when used for a copy-on-write page, does not properly consider the semantics of read operations and therefore can grant unintended write access, aka CID-17839856fd58.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://bugs.chromium.org/p/project-zero/issues/d… | x_refsource_MISC |
| https://cdn.kernel.org/pub/linux/kernel/v5.x/Chan… | x_refsource_MISC |
| https://git.kernel.org/pub/scm/linux/kernel/git/t… | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2021011… | x_refsource_CONFIRM |
| http://packetstormsecurity.com/files/162117/Kerne… | x_refsource_MISC |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://lists.debian.org/debian-lts-announce/2022… | mailing-listx_refsource_MLIST |
| https://www.debian.org/security/2022/dsa-5096 | vendor-advisoryx_refsource_DEBIAN |
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CVE-2020-29568 (GCVE-0-2020-29568)
Vulnerability from cvelistv5 – Published: 2020-12-15 16:52 – Updated: 2024-08-04 16:55
VLAI
EPSS
Summary
An issue was discovered in Xen through 4.14.x. Some OSes (such as Linux, FreeBSD, and NetBSD) are processing watch events using a single thread. If the events are received faster than the thread is able to handle, they will get queued. As the queue is unbounded, a guest may be able to trigger an OOM in the backend. All systems with a FreeBSD, Linux, or NetBSD (any version) dom0 are vulnerable.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://xenbits.xenproject.org/xsa/advisory-349.html | x_refsource_MISC |
| https://www.debian.org/security/2021/dsa-4843 | vendor-advisoryx_refsource_DEBIAN |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://security.gentoo.org/glsa/202107-30 | vendor-advisoryx_refsource_GENTOO |
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
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