🛡️ CVE-2023-4001
🟡 CVSS 6.8 — Medium ✅ No Known Exploit CWE-290 NVD
6.8
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity MEDIUM
CVSS Score 6.8
CVSS Vector CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-290
Public Exploit ✅ No
Source NVD
Published 2024-01-15
Updated 2026-06-08
Modified 2024-11-21
Fix URL N/A

Affected Packages

Software From version Fixed in
enterprise-linux — —
fedora — —
grub2 — —

References

Issue Tracking, Vendor Advisory https://bugzilla.redhat.com/show_bug.cgi?id=2224951
Issue Tracking, Vendor Advisory https://bugzilla.redhat.com/show_bug.cgi?id=2224951

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