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CVE-2025-24032

Estado: AplazadaCrítica (9.2)—

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's public data (e.g. the user's 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's 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;`.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad de autenticación en módulo PAM expuesto a red (AV:N). Atacante crea token PKCS#11 falso sin validar firma de clave privada, obteniendo acceso como usuario legítimo (T1078). También permite manipular credenciales de autenticación (T1556).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account ManagementApplication Developer GuidanceActive Directory ConfigurationVulnerability ScanningUser TrainingUser Account Management

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

PAM Pkcs11 — PAM Pkcs11AI

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2025-24032",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-24032",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2025-02-10T16:20:48.577434Z"
        }
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    "cvssMetricV40": [
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          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 9.2,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
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          "privilegesRequired": "NONE",
          "subIntegrityImpact": "LOW",
          "vulnIntegrityImpact": "HIGH",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
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          "availabilityRequirement": "NOT_DEFINED",
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          "subConfidentialityImpact": "LOW",
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          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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  "affected": [
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      "affectedData": [
        {
          "vendor": "OpenSC",
          "product": "pam_pkcs11",
          "versions": [
            {
              "status": "affected",
              "version": "< 0.6.13"
            }
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      ]
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  ],
  "published": "2025-02-10T16:15:39.153",
  "references": [
    {
      "url": "https://github.com/OpenSC/pam_pkcs11/commit/470263258d1ac59c5eade439c4d9caba0097e6e6",
      "source": "security-advisories@github.com"
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    {
      "url": "https://github.com/OpenSC/pam_pkcs11/commit/b665b287ff955bbbd9539252ff9f9e2754c3fb48",
      "source": "security-advisories@github.com"
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    {
      "url": "https://github.com/OpenSC/pam_pkcs11/releases/tag/pam_pkcs11-0.6.13",
      "source": "security-advisories@github.com"
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    {
      "url": "https://github.com/OpenSC/pam_pkcs11/security/advisories/GHSA-8r8p-7mgp-vf56",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2025/02/msg00021.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.vicarius.io/vsociety/posts/cve-2025-24032-detect-vulnerability-in-linux-pam-module",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.vicarius.io/vsociety/posts/cve-2025-24032-mitigate-linux-pam-module-vulnerability",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "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's public data (e.g. the user's 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's 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;`."
    },
    {
      "lang": "es",
      "value": "PAM-PKCS#11 es un módulo de inicio de sesión de Linux-PAM que permite un inicio de sesión de usuario basado en certificado X.509. Antes de la versión 0.6.13, si cert_policy se configuraba en none (el valor predeterminado), entonces pam_pkcs11 solo verificaba si el usuario puede iniciar sesión en el token. Un atacante puede crear un token diferente con los datos públicos del usuario (por ejemplo, el certificado del usuario) y un PIN conocido por el atacante. Si no se requiere una firma con la clave privada, entonces el atacante puede iniciar sesión como usuario con ese token creado. El valor predeterminado de *no* verificar la firma de la clave privada se ha cambiado con el commit commi6638576892b59a99389043c90a1e7dd4d783b921, por lo que todas las versiones que comiencen con pam_pkcs11-0.6.0 deberían verse afectadas. Como workaround, en `pam_pkcs11.conf`, establezca al menos `cert_policy = signature;`."
    }
  ],
  "lastModified": "2026-06-17T08:57:55.607",
  "sourceIdentifier": "security-advisories@github.com"
}