CVE-2021-3418

MEDIUM

6.4

Beschreibung

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.

CVE Details

CVSS v3.1 Bewertung6.4

SchweregradMEDIUM

CVSS VektorCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

AngriffsvektorLOCAL

KomplexitatHIGH

Erforderliche PrivilegienHIGH

BenutzerinteraktionNONE

Veroffentlicht3/15/2021

Zuletzt geandert11/21/2024

Quellenvd

Honeypot-Sichtungen0

Betroffene Produkte

gnu:grub2

Schwachen (CWE)

CWE-281

Referenzen

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)

IOC Korrelationen

Keine Korrelationen erfasst

This product uses data from the NVD API but is not endorsed or certified by the NVD.