Out-of-bounds Write Affecting grub2-emu-modules package, versions <1:2.06-61.amzn2023.0.16


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (11th percentile)

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  • Snyk IDSNYK-AMZN2023-GRUB2EMUMODULES-9692772
  • published15 Apr 2025
  • disclosed3 Mar 2025

Introduced: 3 Mar 2025

CVE-2025-1125  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 grub2-emu-modules to version 1:2.06-61.amzn2023.0.16 or higher.
This issue was patched in ALAS2023-2025-937.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2-emu-modules package and not the grub2-emu-modules package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

When reading data from a hfs filesystem, grub's hfs filesystem module uses user-controlled parameters from the filesystem metadata to calculate the internal buffers size, however it misses to properly check for integer overflows. A maliciouly crafted filesystem may lead some of those buffer size calculation to overflow, causing it to perform a grub_malloc() operation with a smaller size than expected. As a result the hfsplus_open_compressed_real() function will write past of the internal buffer length. This flaw may be leveraged to corrupt grub's internal critical data and may result in arbitrary code execution by-passing secure boot protections.

CVSS Base Scores

version 3.1