Vulnerability CVE-2023-4001: Information
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.
Severity: MEDIUM (6.8) Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Fixed packages
Package name | Branch | Fixed in version | Version from repository | Errata ID | Task # | State |
|---|---|---|---|---|---|---|
| grub | sisyphus | 2.12-alt1 | 2.12-alt3 | ALT-PU-2024-10928-2 | 354558 | Fixed |
| grub | p11 | 2.12-alt3 | 2.12-alt3 | ALT-PU-2024-11222-2 | 354669 | Fixed |
References to Advisories, Solutions, and Tools
Hyperlink | Resource |
|---|---|
| https://access.redhat.com/security/cve/CVE-2023-4001 |
|
| RHBZ#2224951 |
|
| https://dfir.ru/2024/01/15/cve-2023-4001-a-vulnerability-in-the-downstream-grub-boot-manager/ |
|
| RHSA-2024:0437 | |
| RHSA-2024:0456 | |
| RHSA-2024:0468 |