CVE-2021-3418

MEDIUM

6.4

Descripcion

If certificates that signed grub are installed into db, grub can be booted directly. It will then boot any kernel without signature validation. The booted kernel will think it was booted in secureboot mode and will implement lockdown, yet it could have been tampered. This flaw is a reintroduction of CVE-2020-15705 and only affects grub2 versions prior to 2.06 and upstream and distributions using the shim_lock mechanism.

Detalles CVE

Puntuacion CVSS v3.16.4

SeveridadMEDIUM

Vector CVSSCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Vector de ataqueLOCAL

ComplejidadHIGH

Privilegios requeridosHIGH

Interaccion usuarioNONE

Publicado3/15/2021

Ultima modificacion11/21/2024

Fuentenvd

Avistamientos honeypot0

Productos afectados

gnu:grub2

Debilidades (CWE)

CWE-281

Referencias

https://bugzilla.redhat.com/show_bug.cgi?id=1933757(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=1933757(af854a3a-2127-422b-91ae-364da2661108)

Correlaciones IOC

Sin correlaciones registradas

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