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.
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2024-01-15T11:10:19.517Z

Updated: 2024-09-16T16:51:09.826Z

Reserved: 2023-07-28T20:57:15.937Z

Link: CVE-2023-4001

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2024-01-15T11:15:08.270

Modified: 2024-09-16T17:16:00.797

Link: CVE-2023-4001

cve-icon Redhat

Severity : Moderate

Publid Date: 2024-01-09T00:00:00Z

Links: CVE-2023-4001 - Bugzilla