CVE-2024-56738

MEDIUM

GNU GRUB2 < 2.12 - Observable Timing Discrepancy in grub_crypto_memcmp

Title source: llm
STIX 2.1

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.

References (1)

Core 1
Core References
Issue Tracking, Third Party Advisory
https://savannah.gnu.org/bugs/?66603

Scores

CVSS v3 5.3
EPSS 0.0038
EPSS Percentile 29.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-208 CWE-203
Status published
Products (1)
gnu/grub2 < 2.12
Published Dec 29, 2024
Tracked Since Feb 18, 2026