CVE-2008-4210

Estado: ModificadaMedia (4.6)—Exploit
Gravedad4.6Media · CVSS 2.0
Probabilidad de explotación2.14 %mayor que el 82 % de las CVE
Explotación activaNono figura en el catálogo de CISA
Exploit públicoDisponiblePublicado en Exploit-DB
fs/open.c en el kernel de Linux anterior a v2.6.22 no elimina de forma adecuada los bits "setuid" y "setgid" cuando los escribe en un fichero , lo que permite a usuarios locales obtener privilegios de grupos diferentes, y obtener información sensible o posiblemente tener otro impacto no especificado, creando un fichero ejecutable en el directorio setgid a través de las funciones (1) truncate o (2) ftruncate en conjunción con una E/S mapeada en memoria.
CVSS

Puntuación base: 4.6
Versión: 2.0
Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 2.14 %
Percentil entre todas las CVEs puntuadas: 82
Fecha de la puntuación: 21/10/2026
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).
Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.
Publicado en Exploit-DB · Linux Kernel < 2.6.22 - 'ftruncate()'/'open()' Local Privilege Escalation (27/10/2008)
Tecnologías afectadas (1)

Linux — Linux Kernel
CWE

CWE-264
Referencias

Mostrar las 62 referencias
JSON original (NVD)

Mostrar
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      "value": "fs/open.c in the Linux kernel before 2.6.22 does not properly strip setuid and setgid bits when there is a write to a file, which allows local users to gain the privileges of a different group, and obtain sensitive information or possibly have unspecified other impact, by creating an executable file in a setgid directory through the (1) truncate or (2) ftruncate function in conjunction with memory-mapped I/O."
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  "lastModified": "2026-06-16T22:57:23.250",
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