Vulnerability-Lookup

RHSA-2026:85249

Vulnerability from csaf_redhat - Published: 2026-10-19 16:32 - Updated: 2026-10-19 23:40

Summary

Red Hat Security Advisory: Satellite 6 Client Update

Severity

Moderate

Notes

Topic: Updated Satellite Client packages that fix several bugs are now available for Red Hat Satellite. 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: Red Hat Satellite is a system management solution that allows organizations to configure and maintain their systems without the necessity to provide public Internet access to their servers or other client systems. It performs provisioning and configuration management of predefined standard operating environments. Security Fix(es): * puppet-agent: heap buffer overflow in CMS key unwrapping (CVE-2026-63072)

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.

CVE-2026-63072

A flaw was found in OpenSSL. A crafted CMS (Cryptographic Message Syntax) message can cause an 8-byte out-of-bounds heap write when it is decrypted with CMS_decrypt(). This issue occurs because the CMS decryption process incorrectly sizes the key-unwrap output buffer when using the AES-WRAP-PAD unwrap primitive. This can lead to memory corruption, resulting in a denial of service.

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-787 - Out-of-bounds Write

Affected products

Fixed 11 products

Product	Version	Remediation
Unresolved product id: 10Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el10sat.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: 10Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el10sat.src	—	Vendor Fix fix Workaround
Unresolved product id: 10Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el10sat.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-satellite-client-openvox:openvox-agent-0:8.30.0-1.el7sat.src	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-satellite-client-openvox:openvox-agent-0:8.30.0-1.el7sat.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: 8Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el8sat.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: 8Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el8sat.src	—	Vendor Fix fix Workaround
Unresolved product id: 8Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el8sat.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: 9Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el9sat.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: 9Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el9sat.src	—	Vendor Fix fix Workaround
Unresolved product id: 9Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el9sat.x86_64	—	Vendor Fix fix Workaround

Threats

Impact Moderate

References

9 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:85249	self
https://access.redhat.com/security/updates/classi…	external
https://issues.redhat.com/browse/SAT-30237	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-63072	self
https://bugzilla.redhat.com/show_bug.cgi?id=2517560	external
https://www.cve.org/CVERecord?id=CVE-2026-63072	external
https://nvd.nist.gov/vuln/detail/CVE-2026-63072	external
https://openssl-library.org/news/secadv/20260825.txt	external

JSON

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  "vulnerabilities": [
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      "cwe": {
        "id": "CWE-787",
        "name": "Out-of-bounds Write"
      },
      "discovery_date": "2026-08-17T19:24:54.673000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2517560"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in OpenSSL. A crafted CMS (Cryptographic Message Syntax) message can cause an 8-byte out-of-bounds heap write when it is decrypted with CMS_decrypt(). This issue occurs because the CMS decryption process incorrectly sizes the key-unwrap output buffer when using the AES-WRAP-PAD unwrap primitive. This can lead to memory corruption, resulting in a denial of service.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "openssl: heap buffer overflow in CMS key unwrapping",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "To exploit this flaw, an attacker needs to supply a crafted CMS message to be decrypted in an application by CMS_decrypt(). The out-of-bounds write is a fixed-size (8-byte), fixed-value (zero) heap overflow immediately past the memory allocation, causing memory corruption, but the impact is limited to a denial of service. For these reasons, this flaw has been rated with a moderate severity.",
          "title": "Statement"
        },
        {
          "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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          "9Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el9sat.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-63072"
        },
        {
          "category": "external",
          "summary": "RHBZ#2517560",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517560"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-63072",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-63072"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-63072",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63072"
        },
        {
          "category": "external",
          "summary": "https://openssl-library.org/news/secadv/20260825.txt",
          "url": "https://openssl-library.org/news/secadv/20260825.txt"
        }
      ],
      "release_date": "2026-08-25T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-10-19T16:32:21+00:00",
          "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor detailed instructions how to apply this update, refer to:\n\nhttps://docs.redhat.com/en/documentation/red_hat_satellite/6.19/html/updating_red_hat_satellite/index",
          "product_ids": [
            "10Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el10sat.aarch64",
            "10Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el10sat.src",
            "10Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el10sat.x86_64",
            "7Server-satellite-client-openvox:openvox-agent-0:8.30.0-1.el7sat.src",
            "7Server-satellite-client-openvox:openvox-agent-0:8.30.0-1.el7sat.x86_64",
            "8Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el8sat.aarch64",
            "8Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el8sat.src",
            "8Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el8sat.x86_64",
            "9Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el9sat.aarch64",
            "9Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el9sat.src",
            "9Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el9sat.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:85249"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
          "product_ids": [
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            "10Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el10sat.src",
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            "9Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el9sat.src",
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        }
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      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "10Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el10sat.aarch64",
            "10Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el10sat.src",
            "10Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el10sat.x86_64",
            "7Server-satellite-client-openvox:openvox-agent-0:8.30.0-1.el7sat.src",
            "7Server-satellite-client-openvox:openvox-agent-0:8.30.0-1.el7sat.x86_64",
            "8Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el8sat.aarch64",
            "8Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el8sat.src",
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            "9Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el9sat.aarch64",
            "9Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el9sat.src",
            "9Base-openvox-agent-6:openvox-agent-0:8.30.0-1.el9sat.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "openssl: heap buffer overflow in CMS key unwrapping"
    }
  ]
}

CVE-2026-63072 (GCVE-0-2026-63072)

Vulnerability from cvelistv5 – Published: 2026-08-25 12:59 – Updated: 2026-08-25 14:29

Title

Heap Buffer Overflow in CMS Key Unwrapping

Summary

Issue summary: OpenSSL CMS decryption sizes the key-unwrap output buffer based on querying the unwrapped key size, but the AES-WRAP-PAD unwrap primitive can write and cleanse more bytes than that query reports, causing an 8-byte out-of-bounds heap write. Impact summary: An attacker who supplies a crafted CMS message can trigger a deterministic 8-byte out-of-bounds heap write when the victim decrypts it with CMS_decrypt(), corrupting the heap and typically resulting in a Denial of Service. CWE: CWE-787: Out-of-bounds Write Description: The key-wrap OID is potentially attacker-controlled on the wire. CMS unwrapping allows both id-aesNNN-wrap-pad and id-aesNNN-wrap ciphers. An attacker can take a legitimate message and change a single OID byte to select the padded variant while leaving the message otherwise valid. Since the unwrap key is derived from the recipient's private operation (ECDH key agreement or ML-KEM decapsulation), the RFC 5649 integrity check cannot pass, and the decryption fails with integrity failure. The write is a fixed-size (8-byte), fixed-value (zero) heap overflow immediately past the allocation, requires no special configuration, and is reachable from the public CMS_decrypt() function. The consequence is a heap corruption leading to a Denial of Service. The fix in the CMS code sizes the unwrap output buffer for the worst case so a failed unwrap cannot write past the allocation. FIPS impact: no As the CMS code lives outside the FIPS module boundary, no FIPS modules are affected by this CVE.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-25 14:29 UTC

CWE

CWE-787 - Out-of-bounds Write

Assigner

openssl CNA under the mitre root

CNA scorecard B 78/100 over 43 records in the last 180 days details

References

6 references

URL	Tags
https://openssl-library.org/news/secadv/20260825.txt	vendor-advisory
https://github.com/openssl/openssl/commit/9530a5f…	patch
https://github.com/openssl/openssl/commit/2a3dac8…	patch
https://github.com/openssl/openssl/commit/87784ad…	patch
https://github.com/openssl/openssl/commit/9ec2f6d…	patch
https://github.com/openssl/openssl/commit/a0c8ec5…	patch

Impacted products

1 product

Vendor	Product	Version
OpenSSL	OpenSSL	Affected: 4.0.0 , < 4.0.2 (semver) Affected: 3.6.0 , < 3.6.4 (semver) Affected: 3.5.0 , < 3.5.8 (semver) Affected: 3.4.0 , < 3.4.7 (semver) Affected: 3.0.0 , < 3.0.22 (semver) Affected: 1.1.1 , < 1.1.1zi (custom)

Date Public

2026-08-25 11:36

Credits

Bhabani Sankar Das Filipe Casal(Trail of Bits) Daniel Kubec

Show details on NVD website

JSON

To clipboard

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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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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