Vulnerability Details : CVE-2023-4001

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.
Published 2024-01-15 11:15:08
Updated 2024-09-16 17:16:01
Source Red Hat, Inc.
View at NVD,   CVE.org

Products affected by CVE-2023-4001

Exploit prediction scoring system (EPSS) score for CVE-2023-4001

EPSS FAQ
0.06%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 26 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2023-4001

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.8
 MEDIUM CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.9
5.9
 NIST 2024-01-23
5.6
 MEDIUM CVSS:3.1/AV:P/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
0.4
5.2
 Red Hat, Inc. 2024-01-15
6.8
 MEDIUM CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.9
5.9
 Red Hat, Inc. 2024-01-25

CWE ids for CVE-2023-4001

  • This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.
    Assigned by:
    • nvd@nist.gov (Primary)
    • secalert@redhat.com (Secondary)

References for CVE-2023-4001

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