CVE-2023-0386

Estado: AnalizadaAlta (7.8)⚠ Explotación activa

A flaw was found in the Linux kernel, where unauthorized access to the execution of the setuid file with capabilities was found in the Linux kernel’s OverlayFS subsystem in how a user copies a capable file from a nosuid mount into another mount. This uid mapping bug allows a local user to escalate their privileges on the system.

CVSS

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

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 7.88%
Percentil entre todas las CVEs puntuadas: 95
Fecha de la puntuación: 5/10/2026

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).

CISA KEV — explotada activamente

Añadida al catálogo: 17/6/2025
Plazo de remediación: 8/7/2025
Uso conocido en ransomware: Unknown

🎯 Técnicas ATT&CK

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

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation95 %
Impacto principalT1548.004 Elevated Execution with Promptprivilege escalation90 %
Impacto secundarioT1059.004 Unix Shellexecution75 %

OverlayFS permite a usuario local copiar archivo setuid con capacidades desde mount nosuid, escalando privilegios. Vector AV:L/PR:L confirma explotación local (T1068). Acceso a ejecución de comandos como root.

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

Execution Prevention Threat Intelligence Program Application Isolation and Sandboxing Exploit Protection Update Software

Tecnologías afectadas (8)

Canonical — Ubuntu Linux Debian — Debian Linux Linux — Linux Kernel Netapp — H300s Firmware Netapp — H410c Firmware Netapp — H410s Firmware Netapp — H500s Firmware Netapp — H700s Firmware

CWE

CWE-282
NVD-CWE-Other

Referencias

JSON original (NVD)

Mostrar

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