cyrus-sasl security update

{
  "id": "accd36383728990eb6412c44353dde6319591645e3245672535206646bdb9657",
  "url": "https://osv.dev/vulnerability/OESA-2026-4302",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "cyrus-sasl security update",
    "summary": "The package contains the Cyrus implementation of SASL. SASL is the Simple Authentication and Security Layer, a method for adding authentication support to connection-based protocols. Security Fix(es): A heap-based buffer overflow flaw was found in Cyrus SASL. The add_to_challenge() function in the DIGEST-MD5 plugin computes the size of the buffer needed for a challenge/response field before DIGEST-MD5 quoting is applied, but does not recompute that size when quoting (escaping special characters) makes the value longer. The under-sized buffer is then passed to strcat(), causing a heap-based out-of-bounds write whose size depends on attacker-controlled input. A malicious or on-path DIGEST-MD5 (or HTTP Digest) server can trigger this flaw in a connecting client by supplying a crafted challenge field, such as realm or nonce, most likely resulting in a crash of the client application.(CVE-2026-107161)",
    "evidence": "osv:OESA-2026-4302",
    "products": [
      {
        "name": {
          "value": "cyrus-sasl",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.1.28-12.oe2403sp1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "OESA-2026-4302",
      "aliases": [
        "OESA-2026-4302"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.1.28-12.oe2403sp1"
                }
              ]
            }
          ],
          "package": {
            "name": "cyrus-sasl",
            "purl": "pkg:rpm/openEuler/cyrus-sasl&distro=openEuler-24.03-LTS-SP1",
            "ecosystem": "openEuler:24.03-LTS-SP1"
          },
          "database_specific": {
            "source": "https://repo.openeuler.org/security/data/osv/OESA-2026-4302.json"
          },
          "ecosystem_specific": {
            "src": [
              "cyrus-sasl-2.1.28-12.oe2403sp1.src.rpm"
            ],
            "noarch": [
              "cyrus-sasl-help-2.1.28-12.oe2403sp1.noarch.rpm"
            ],
            "x86_64": [
              "cyrus-sasl-2.1.28-12.oe2403sp1.x86_64.rpm",
              "cyrus-sasl-debuginfo-2.1.28-12.oe2403sp1.x86_64.rpm",
              "cyrus-sasl-debugsource-2.1.28-12.oe2403sp1.x86_64.rpm",
              "cyrus-sasl-devel-2.1.28-12.oe2403sp1.x86_64.rpm",
              "cyrus-sasl-lib-2.1.28-12.oe2403sp1.x86_64.rpm",
              "cyrus-sasl-sql-2.1.28-12.oe2403sp1.x86_64.rpm"
            ],
            "aarch64": [
              "cyrus-sasl-2.1.28-12.oe2403sp1.aarch64.rpm",
              "cyrus-sasl-debuginfo-2.1.28-12.oe2403sp1.aarch64.rpm",
              "cyrus-sasl-debugsource-2.1.28-12.oe2403sp1.aarch64.rpm",
              "cyrus-sasl-devel-2.1.28-12.oe2403sp1.aarch64.rpm",
              "cyrus-sasl-lib-2.1.28-12.oe2403sp1.aarch64.rpm",
              "cyrus-sasl-sql-2.1.28-12.oe2403sp1.aarch64.rpm"
            ]
          }
        }
      ],
      "modified": "2026-10-16T12:15:18.166047439Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-107161"
      ],
      "references": [
        "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4302",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-107161"
      ],
      "provider_metadata": {
        "severity": "High"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-107161",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 340885,
  "published_at": "2026-10-16T11:59:08+00:00"
}