Out-of-bounds Write Affecting grub2-efi-x64 package, versions <1:2.02-156.el8.rocky.0.1


Severity

Recommended
medium

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.05% (23rd percentile)

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  • Snyk IDSNYK-ROCKY8-GRUB2EFIX64-7258276
  • published15 Jun 2024
  • disclosed25 Oct 2023

Introduced: 25 Oct 2023

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

How to fix?

Upgrade Rocky-Linux:8 grub2-efi-x64 to version 1:2.02-156.el8.rocky.0.1 or higher.
This issue was patched in RLSA-2024:3184.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2-efi-x64 package and not the grub2-efi-x64 package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 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