Detections
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CVE-2023-4001
medium
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.
References
https://security.netapp.com/advisory/ntap-20240216-0006/
https://dfir.ru/2024/01/15/cve-2023-4001-a-vulnerability-in-the-downstream-grub-boot-manager/
https://bugzilla.redhat.com/show_bug.cgi?id=2224951
https://access.redhat.com/security/cve/CVE-2023-4001
https://access.redhat.com/errata/RHSA-2024:0468
https://access.redhat.com/errata/RHSA-2024:0456