CVE-2018-1000001

Estado: ModificadaAlta (7.8)—💥 Exploit

In glibc 2.26 and earlier there is confusion in the usage of getcwd() by realpath() which can be used to write before the destination buffer leading to a buffer underflow and potential code execution.

CVSS

Versión: 3.0
Vector: CVSS:3.0/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: 13%
Percentil entre todas las CVEs puntuadas: 96
Fecha de la puntuación: 6/10/2026

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) · glibc 'realpath()' Privilege Escalation
Publicado en Exploit-DB · glibc - 'realpath()' Privilege Escalation (Metasploit) (13/6/2018)
Publicado en Exploit-DB · glibc < 2.26 - 'getcwd()' Local Privilege Escalation (16/1/2018)
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 (9)

Canonical — Ubuntu Linux GNU — Glibc Redhat — Enterprise Linux Desktop Redhat — Enterprise Linux Server Redhat — Enterprise Linux Server AUS Redhat — Enterprise Linux Server EUS Redhat — Enterprise Linux Server TUS Redhat — Enterprise Linux Workstation Redhat — Virtualization Host

CWE

CWE-787

Referencias

JSON original (NVD)

Mostrar

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