ubuntu-cve-2025-24531
Vulnerability from osv_ubuntu
Published
2025-02-07 00:00
Modified
2026-01-21 17:31
Summary
Details

In OpenSC pam_pkcs11 before 0.6.13, pam_sm_authenticate() wrongly returns PAM_IGNORE in many error situations (such as an error triggered by a smartcard before login), allowing authentication bypass.

Severity
6.7 (Medium)
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
N/A (UNKNOWN)
high
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libpam-pkcs11",
            "binary_version": "0.6.12-2ubuntu0.24.04.1"
          }
        ],
        "priority_reason": "flaw would allow bypassing strong authentication"
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "pam-pkcs11",
        "purl": "pkg:deb/ubuntu/pam-pkcs11@0.6.12-2ubuntu0.24.04.1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.6.12-2ubuntu0.24.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.6.12-1",
        "0.6.12-2",
        "0.6.12-2build2",
        "0.6.12-2build3"
      ]
    }
  ],
  "aliases": [],
  "details": "In OpenSC pam_pkcs11 before 0.6.13, pam_sm_authenticate() wrongly returns PAM_IGNORE in many error situations (such as an error triggered by a smartcard before login), allowing authentication bypass.",
  "id": "UBUNTU-CVE-2025-24531",
  "modified": "2026-01-21T17:31:56Z",
  "published": "2025-02-07T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-24531"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-24531"
    },
    {
      "type": "REPORT",
      "url": "https://www.openwall.com/lists/oss-security/2025/02/06/3"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7363-1"
    }
  ],
  "related": [
    "USN-7363-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "high",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2025-24531"
  ]
}



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