CVE-2023-4001
Published: Jan 15, 2024
Modified: Nov 20, 2025
CVSS v3.1
6.8
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.
| Vendor | Product | Versions |
|---|---|---|
Red Hat | Red Hat Enterprise Linux 9 | unaffected 1:2.06-70.el9_3.2 - < * |
Red Hat | Red Hat Enterprise Linux 9.0 Extended Update Support | unaffected 1:2.06-27.el9_0.16 - < * |
Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support | unaffected 1:2.06-61.el9_2.2 - < * |
Red Hat | Red Hat Enterprise Linux 8 | All versions |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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