Out-of-bounds Write Affecting grub2-tools-minimal package, versions <1:2.06-77.el9.alma.1


Severity

Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.05% (23rd percentile)

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  • Snyk IDSNYK-ALMALINUX9-GRUB2TOOLSMINIMAL-6827912
  • published9 May 2024
  • disclosed30 Apr 2024

Introduced: 30 Apr 2024

CVE-2023-4692  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 grub2-tools-minimal to version 1:2.06-77.el9.alma.1 or higher.
This issue was patched in ALSA-2024:2456.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2-tools-minimal package and not the grub2-tools-minimal package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some circumstances, the attack may also corrupt the UEFI firmware heap metadata. As a result, arbitrary code execution and secure boot protection bypass may be achieved.

CVSS Base Scores

version 3.1