CVE-2012-6150

Estado: ModificadaBaja (3.6)—
The winbind_name_list_to_sid_string_list function in nsswitch/pam_winbind.c in Samba through 4.1.2 handles invalid require_membership_of group names by accepting authentication by any user, which allows remote authenticated users to bypass intended access restrictions in opportunistic circumstances by leveraging an administrator's pam_winbind configuration-file mistake.
CVSS

Versión: 2.0
Vector: AV:N/AC:H/Au:S/C:P/I:P/A:N
Puntuación base: 3.6
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 3.79%
Percentil entre todas las CVEs puntuadas: 90
Fecha de la puntuación: 7/10/2026
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).
Tecnologías afectadas (2)

Canonical — Ubuntu Linux Samba — Samba
CWE

CWE-20
Referencias

JSON original (NVD)

Mostrar
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          "vectorString": "AV:N/AC:H/Au:S/C:P/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "HIGH",
          "availabilityImpact": "NONE",
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      "description": [
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          "lang": "en",
          "value": "CWE-20"
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    {
      "lang": "en",
      "value": "The winbind_name_list_to_sid_string_list function in nsswitch/pam_winbind.c in Samba through 4.1.2 handles invalid require_membership_of group names by accepting authentication by any user, which allows remote authenticated users to bypass intended access restrictions in opportunistic circumstances by leveraging an administrator's pam_winbind configuration-file mistake."
    },
    {
      "lang": "es",
      "value": "La función winbind_name_list_to_sid_string_list en nsswitch/pam_winbind.c en Samba hasta v4.1.2 maneja nombres de grupo require_membership_of inválidos aceptando autenticación de cualquier usuario, lo cual permite a usuarios autenticados remotamente sortear restricciones de acceso en circunstancias oportunistas mediante el aprovechamiento de un error en el fichero de configuración de administración pam_winbind."
    }
  ],
  "lastModified": "2026-06-16T23:47:54.940",
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