suse-su-2025:0712-1
Vulnerability from csaf_suse
Published
2025-02-25 10:38
Modified
2025-02-25 10:38
Summary
Security update for pam_pkcs11

Notes

Title of the patch
Security update for pam_pkcs11
Description of the patch
This update for pam_pkcs11 fixes the following issues: - CVE-2025-24032: default value for `cert_policy` (`none`) allows for authentication bypass (bsc#1237062). - CVE-2025-24031: uninitialized pointer dereference caused by user pressing ctrl-c/ctrl-d when asked for PIN leads to crash (bsc#1237058).
Patchnames
SUSE-2025-712,SUSE-SLE-Micro-5.3-2025-712,SUSE-SLE-Micro-5.4-2025-712,SUSE-SLE-Micro-5.5-2025-712,SUSE-SUSE-MicroOS-5.1-2025-712,SUSE-SUSE-MicroOS-5.2-2025-712
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).


To clipboard 

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    "distribution": {
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        "text": "This update for pam_pkcs11 fixes the following issues:\n\n- CVE-2025-24032: default value for `cert_policy` (`none`) allows for authentication bypass (bsc#1237062).\n- CVE-2025-24031: uninitialized pointer dereference caused by user pressing ctrl-c/ctrl-d when asked for PIN leads to\n  crash (bsc#1237058).\n",
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  "vulnerabilities": [
    {
      "cve": "CVE-2025-24031",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2025-24031"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "PAM-PKCS#11 is a Linux-PAM login module that allows a X.509 certificate based user login. In versions 0.6.12 and prior, the pam_pkcs11 module segfaults when a user presses ctrl-c/ctrl-d when they are asked for a PIN. When a user enters no PIN at all, `pam_get_pwd` will never initialize the password buffer pointer and as such `cleanse` will try to dereference an uninitialized pointer. On my system this pointer happens to have the value 3 most of the time when running sudo and as such it will segfault. The most likely impact to a system affected by this issue is an availability impact due to a daemon that uses PAM crashing. As of time of publication, a patch for the issue is unavailable.",
          "title": "CVE description"
        }
      ],
      "product_status": {
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      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2025-24031",
          "url": "https://www.suse.com/security/cve/CVE-2025-24031"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1237058 for CVE-2025-24031",
          "url": "https://bugzilla.suse.com/1237058"
        }
      ],
      "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",
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        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Enterprise Micro 5.1:pam_pkcs11-0.6.10-150100.3.6.1.aarch64",
            "SUSE Linux Enterprise Micro 5.1:pam_pkcs11-0.6.10-150100.3.6.1.s390x",
            "SUSE Linux Enterprise Micro 5.1:pam_pkcs11-0.6.10-150100.3.6.1.x86_64",
            "SUSE Linux Enterprise Micro 5.2:pam_pkcs11-0.6.10-150100.3.6.1.aarch64",
            "SUSE Linux Enterprise Micro 5.2:pam_pkcs11-0.6.10-150100.3.6.1.s390x",
            "SUSE Linux Enterprise Micro 5.2:pam_pkcs11-0.6.10-150100.3.6.1.x86_64",
            "SUSE Linux Enterprise Micro 5.3:pam_pkcs11-0.6.10-150100.3.6.1.aarch64",
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            "SUSE Linux Enterprise Micro 5.5:pam_pkcs11-0.6.10-150100.3.6.1.s390x",
            "SUSE Linux Enterprise Micro 5.5:pam_pkcs11-0.6.10-150100.3.6.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2025-02-25T10:38:03Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2025-24031"
    },
    {
      "cve": "CVE-2025-24032",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2025-24032"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "PAM-PKCS#11 is a Linux-PAM login module that allows a X.509 certificate based user login. Prior to version 0.6.13, if cert_policy is set to none (the default value), then pam_pkcs11 will only check if the user is capable of logging into the token. An attacker may create a different token with the user\u0027s public data (e.g. the user\u0027s certificate) and a PIN known to the attacker. If no signature with the private key is required, then the attacker may now login as user with that created token. The default to *not* check the private key\u0027s signature has been changed with commit commi6638576892b59a99389043c90a1e7dd4d783b921, so that all versions starting with pam_pkcs11-0.6.0 should be affected. As a workaround, in `pam_pkcs11.conf`, set at least `cert_policy = signature;`.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Enterprise Micro 5.1:pam_pkcs11-0.6.10-150100.3.6.1.aarch64",
          "SUSE Linux Enterprise Micro 5.1:pam_pkcs11-0.6.10-150100.3.6.1.s390x",
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          "SUSE Linux Enterprise Micro 5.2:pam_pkcs11-0.6.10-150100.3.6.1.aarch64",
          "SUSE Linux Enterprise Micro 5.2:pam_pkcs11-0.6.10-150100.3.6.1.s390x",
          "SUSE Linux Enterprise Micro 5.2:pam_pkcs11-0.6.10-150100.3.6.1.x86_64",
          "SUSE Linux Enterprise Micro 5.3:pam_pkcs11-0.6.10-150100.3.6.1.aarch64",
          "SUSE Linux Enterprise Micro 5.3:pam_pkcs11-0.6.10-150100.3.6.1.s390x",
          "SUSE Linux Enterprise Micro 5.3:pam_pkcs11-0.6.10-150100.3.6.1.x86_64",
          "SUSE Linux Enterprise Micro 5.4:pam_pkcs11-0.6.10-150100.3.6.1.aarch64",
          "SUSE Linux Enterprise Micro 5.4:pam_pkcs11-0.6.10-150100.3.6.1.s390x",
          "SUSE Linux Enterprise Micro 5.4:pam_pkcs11-0.6.10-150100.3.6.1.x86_64",
          "SUSE Linux Enterprise Micro 5.5:pam_pkcs11-0.6.10-150100.3.6.1.aarch64",
          "SUSE Linux Enterprise Micro 5.5:pam_pkcs11-0.6.10-150100.3.6.1.ppc64le",
          "SUSE Linux Enterprise Micro 5.5:pam_pkcs11-0.6.10-150100.3.6.1.s390x",
          "SUSE Linux Enterprise Micro 5.5:pam_pkcs11-0.6.10-150100.3.6.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2025-24032",
          "url": "https://www.suse.com/security/cve/CVE-2025-24032"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1237062 for CVE-2025-24032",
          "url": "https://bugzilla.suse.com/1237062"
        }
      ],
      "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 Linux Enterprise Micro 5.1:pam_pkcs11-0.6.10-150100.3.6.1.aarch64",
            "SUSE Linux Enterprise Micro 5.1:pam_pkcs11-0.6.10-150100.3.6.1.s390x",
            "SUSE Linux Enterprise Micro 5.1:pam_pkcs11-0.6.10-150100.3.6.1.x86_64",
            "SUSE Linux Enterprise Micro 5.2:pam_pkcs11-0.6.10-150100.3.6.1.aarch64",
            "SUSE Linux Enterprise Micro 5.2:pam_pkcs11-0.6.10-150100.3.6.1.s390x",
            "SUSE Linux Enterprise Micro 5.2:pam_pkcs11-0.6.10-150100.3.6.1.x86_64",
            "SUSE Linux Enterprise Micro 5.3:pam_pkcs11-0.6.10-150100.3.6.1.aarch64",
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            "SUSE Linux Enterprise Micro 5.4:pam_pkcs11-0.6.10-150100.3.6.1.aarch64",
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            "SUSE Linux Enterprise Micro 5.4:pam_pkcs11-0.6.10-150100.3.6.1.x86_64",
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            "SUSE Linux Enterprise Micro 5.5:pam_pkcs11-0.6.10-150100.3.6.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
            "version": "3.1"
          },
          "products": [
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            "SUSE Linux Enterprise Micro 5.1:pam_pkcs11-0.6.10-150100.3.6.1.s390x",
            "SUSE Linux Enterprise Micro 5.1:pam_pkcs11-0.6.10-150100.3.6.1.x86_64",
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            "SUSE Linux Enterprise Micro 5.5:pam_pkcs11-0.6.10-150100.3.6.1.s390x",
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2025-02-25T10:38:03Z",
          "details": "important"
        }
      ],
      "title": "CVE-2025-24032"
    }
  ]
}


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