CVE-2017-7308

Estado: ModificadaAlta (7.8)—Exploit

Gravedad7.8Alta · CVSS 3.1

Probabilidad de explotación18 %mayor que el 97 % de las CVE

Explotación activaNono figura en el catálogo de CISA

Exploit públicoDisponiblePublicado en Exploit-DB · Prueba de concepto en GitHub (no verificada) · Módulo de Metasploit (exploit fiable y al alcance de cualquiera)

La función packet_set_ring en el archivo net/packet/af_packet.c en el kernel de Linux hasta versión 4.10.6, no comprueba apropiadamente ciertos datos de tamaño de bloque, lo que permite a los usuarios locales causar una denegación de servicio (error de firma de enteros y escritura fuera de límites), y alcanzar privilegios (si se mantiene la capacidad CAP_NET_RAW), por medio de llamadas de sistema diseñadas.

CVSS

Puntuación base: 7.8
Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 18 %
Percentil entre todas las CVEs puntuadas: 97
Fecha de la puntuación: 20/10/2026

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.

Módulo de Metasploit (exploit fiable y al alcance de cualquiera) · AF_PACKET packet_set_ring Privilege Escalation
Publicado en Exploit-DB · Linux Kernel 4.8.0-34 < 4.8.0-45 (Ubuntu / Linux Mint) - Packet Socket Local Privilege Escalation (29/12/2018)
Publicado en Exploit-DB · Linux 4.8.0 < 4.8.0-46 - AF_PACKET packet_set_ring Privilege Escalation (Metasploit) (18/5/2018)
Publicado en Exploit-DB · Linux Kernel 4.8.0-41-generic (Ubuntu) - Packet Socket Local Privilege Escalation (11/5/2017)
Prueba de concepto en GitHub (no verificada) · Lista de pruebas de concepto en GitHub

⚠️ Las pruebas de concepto de GitHub no están verificadas: algunas son falsas o contienen malware. No las ejecute nunca fuera de un laboratorio aislado.

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

CWE-681, CWE-787

Referencias

Mostrar las 24 referencias

JSON original (NVD)

Mostrar

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