GNU GRUB (aka GRUB2) through 2.12 does not use a constant-time algorithm for grub_crypto_memcmp and thus allows side-channel attacks.
History

Tue, 24 Jun 2025 00:45:00 +0000

Type Values Removed Values Added
First Time appeared Gnu
Gnu grub2
Weaknesses CWE-203
CPEs cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:*
Vendors & Products Gnu
Gnu grub2

Thu, 09 Jan 2025 14:00:00 +0000

Type Values Removed Values Added
Title grub2: Observable Timing Discrepancy resulting side-channel attacks
References
Metrics threat_severity

None

threat_severity

Moderate


Tue, 31 Dec 2024 19:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sun, 29 Dec 2024 07:00:00 +0000

Type Values Removed Values Added
Description GNU GRUB (aka GRUB2) through 2.12 does not use a constant-time algorithm for grub_crypto_memcmp and thus allows side-channel attacks.
Weaknesses CWE-208
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-12-31T18:15:24.931Z

Reserved: 2024-12-29T00:00:00

Link: CVE-2024-56738

cve-icon Vulnrichment

Updated: 2024-12-31T18:15:15.613Z

cve-icon NVD

Status : Analyzed

Published: 2024-12-29T07:15:06.183

Modified: 2025-06-24T00:29:03.183

Link: CVE-2024-56738

cve-icon Redhat

Severity : Moderate

Publid Date: 2024-12-29T00:00:00Z

Links: CVE-2024-56738 - Bugzilla