RHSA-2025:11884

Vulnerability from csaf_opensuse - Published: 2025-07-28 00:00 - Updated: 2026-09-20 11:47
Summary
security update for unbound
Severity
Important
Notes
Title of the patch: security update for unbound
Description of the patch: This security update provides a functional equivalent of RHSA-2025:11884. The original Red Hat(R) advisory is available from the Red Hat web site at https://access.redhat.com/errata/RHSA-2025:11884.
Patchnames: RHSA-2025:11884
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Liberty Linux 8:python3-unbound-0:1.16.2-5.9.el8_10.x86_64 —
Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:unbound-0:1.16.2-5.9.el8_10.x86_64 —
Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:unbound-devel-0:1.16.2-5.9.el8_10.i686 —
Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:unbound-devel-0:1.16.2-5.9.el8_10.x86_64 —
Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:unbound-libs-0:1.16.2-5.9.el8_10.i686 —
Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:unbound-libs-0:1.16.2-5.9.el8_10.x86_64 —
Vendor Fix
Threats
Impact important

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          "text": "https://www.suse.com/security/cve/CVE-2025-5994"
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      ],
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        {
          "category": "general",
          "text": "A multi-vendor cache poisoning vulnerability named \u0027Rebirthday Attack\u0027 has been discovered in caching resolvers that support EDNS Client Subnet (ECS). Unbound is also vulnerable when compiled with ECS support, i.e., \u0027--enable-subnet\u0027, AND configured to send ECS information along with queries to upstream name servers, i.e., at least one of the \u0027send-client-subnet\u0027, \u0027client-subnet-zone\u0027 or \u0027client-subnet-always-forward\u0027 options is used. Resolvers supporting ECS need to segregate outgoing queries to accommodate for different outgoing ECS information. This re-opens up resolvers to a birthday paradox attack (Rebirthday Attack) that tries to match the DNS transaction ID in order to cache non-ECS poisonous replies.",
          "title": "CVE description"
        }
      ],
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          "SUSE Liberty Linux 8:unbound-libs-0:1.16.2-5.9.el8_10.x86_64"
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        {
          "category": "external",
          "summary": "SUSE Bug 1246625 for CVE-2025-5994",
          "url": "https://bugzilla.suse.com/1246625"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Liberty Linux 8:python3-unbound-0:1.16.2-5.9.el8_10.x86_64",
            "SUSE Liberty Linux 8:unbound-0:1.16.2-5.9.el8_10.x86_64",
            "SUSE Liberty Linux 8:unbound-devel-0:1.16.2-5.9.el8_10.i686",
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            "SUSE Liberty Linux 8:unbound-libs-0:1.16.2-5.9.el8_10.i686",
            "SUSE Liberty Linux 8:unbound-libs-0:1.16.2-5.9.el8_10.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
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            "SUSE Liberty Linux 8:unbound-libs-0:1.16.2-5.9.el8_10.x86_64"
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2025-07-28T00:00:00Z",
          "details": "important"
        }
      ],
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    }
  ]
}



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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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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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