Heap-based Buffer Overflow Affecting grub2-ppc64le-modules package, versions <1:2.02-156.el8


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-CENTOS8-GRUB2PPC64LEMODULES-5930509
  • published4 Oct 2023
  • disclosed3 Oct 2023

Introduced: 3 Oct 2023

CVE-2023-4692  (opens in a new tab)
CWE-122  (opens in a new tab)

How to fix?

Upgrade Centos:8 grub2-ppc64le-modules to version 1:2.02-156.el8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2-ppc64le-modules package and not the grub2-ppc64le-modules package as distributed by Centos. See How to fix? for Centos: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 Scores

version 3.1