Out-of-bounds Write Affecting grub2-emu package, versions <1:2.06-14.amzn2.0.6


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.03% (6th percentile)

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  • Snyk IDSNYK-AMZN2-GRUB2EMU-9911463
  • published1 May 2025
  • disclosed18 Feb 2025

Introduced: 18 Feb 2025

CVE-2024-45776  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 grub2-emu to version 1:2.06-14.amzn2.0.6 or higher.
This issue was patched in ALAS2-2025-2844.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2-emu package and not the grub2-emu package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

When reading the language .mo file in grub_mofile_open(), grub2 fails to verify an integer overflow when allocating its internal buffer. A crafted .mo file may lead the buffer size calculation to overflow, leading to out-of-bound reads and writes. This flaw allows an attacker to leak sensitive data or overwrite critical data, possibly circumventing secure boot protections.

CVSS Base Scores

version 3.1