CVEvulnerability

CVE-2023-4001

6.8 MEDIUM Published 2024-01-15 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2024-01-15
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.8 MEDIUM — CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected])
6.8 MEDIUM — CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-290

Description

An authentication bypass flaw was found in GRUB due to the way that GRUB uses the UUID of a device to search for the configuration file that contains the password hash for the GRUB password protection feature. An attacker capable of attaching an external drive such as a USB stick containing a file system with a duplicate UUID (the same as in the "/boot/" file system) can bypass the GRUB password protection feature on UEFI systems, which enumerate removable drives before non-removable ones. This issue was introduced in a downstream patch in Red Hat's version of grub2 and does not affect the upstream package.

Affected configurations

• gnu grub2 • redhat enterprise linux 9.0 • fedoraproject fedora 38 • fedoraproject fedora 39

Related

Weakness · CWE (1)

  • CWE-290 Authentication Bypass by Spoofing weakness

References