CVE Published: 15/01/2024 |
CVE Updated: 24/11/2024 |
CVE Year: 2023 Source: redhat |
Vendor: Red Hat |
Product: Red Hat Enterprise Linux 9 Status : PUBLISHED
CVE-2023-4001 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.