RHSA-2025:0325

Vulnerability from csaf_redhat - Published: 2025-01-15 06:42 - Updated: 2026-03-18 02:50
Summary
Red Hat Security Advisory: rsync security update
Severity
Important
Notes
Topic: An update for rsync 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 rsync utility enables the users to copy and synchronize files locally or across a network. Synchronization with rsync is fast because rsync only sends the differences in files over the network instead of sending whole files. The rsync utility is also used as a mirroring tool. Security Fix(es): * rsync: Info Leak via Uninitialized Stack Contents (CVE-2024-12085) 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.
CVE-2024-12085

A flaw was found in rsync which could be triggered when rsync compares file checksums. This flaw allows an attacker to manipulate the checksum length (s2length) to cause a comparison between a checksum and uninitialized memory and leak one byte of uninitialized stack data at a time.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE-908 - Use of Uninitialized Resource
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2025:0325
Workaround Seeing as this vulnerability relies on information leakage coming from the presence of data in the uninitialized memory of the `sum2` buffer, a potential mitigation involves compiling rsync with the `-ftrivial-auto-var-init=zero` option set. This mitigates the issue because it initializes the `sum2` variable's memory with zeroes to prevent uninitialized memory disclosure.
References
Acknowledgments
Google Pedro Gallegos Simon Scannell Jasiel Spelman
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          "text": "A flaw was found in rsync which could be triggered when rsync compares file checksums. This flaw allows an attacker to manipulate the checksum length (s2length) to cause a comparison between a checksum and uninitialized memory and leak one byte of uninitialized stack data at a time.",
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          "text": "rsync: Info Leak via Uninitialized Stack Contents",
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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.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
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      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2024-12085"
        },
        {
          "category": "external",
          "summary": "RHBZ#2330539",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2330539"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2024-12085",
          "url": "https://www.cve.org/CVERecord?id=CVE-2024-12085"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2024-12085",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-12085"
        },
        {
          "category": "external",
          "summary": "https://kb.cert.org/vuls/id/952657",
          "url": "https://kb.cert.org/vuls/id/952657"
        }
      ],
      "release_date": "2025-01-14T15:06:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2025-01-15T06:42:07+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2025:0325"
        },
        {
          "category": "workaround",
          "details": "Seeing as this vulnerability relies on information leakage coming from the presence of data in the uninitialized memory of the `sum2` buffer, a potential mitigation involves compiling rsync with the `-ftrivial-auto-var-init=zero` option set. This mitigates the issue because it initializes the `sum2` variable\u0027s memory with zeroes to prevent uninitialized memory disclosure.",
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      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "rsync: Info Leak via Uninitialized Stack Contents"
    }
  ]
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.



Detection rules are retrieved from Rulezet.