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.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2025-08-30T06:00:11.693Z

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

Link: CVE-2023-4001

cve-icon Vulnrichment

Updated: 2024-08-02T07:17:10.437Z

cve-icon NVD

Status : Modified

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

Modified: 2024-11-21T08:34:11.900

Link: CVE-2023-4001

cve-icon Redhat

Severity : Moderate

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

Links: CVE-2023-4001 - Bugzilla

cve-icon OpenCVE Enrichment

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