Out-of-bounds Read Affecting grub2-pc-modules package, versions <1:2.06-77.el9


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.07% (31st percentile)

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  • Snyk IDSNYK-RHEL9-GRUB2PCMODULES-5929907
  • published4 Oct 2023
  • disclosed3 Oct 2023

Introduced: 3 Oct 2023

CVE-2023-4693  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade RHEL:9 grub2-pc-modules to version 1:2.06-77.el9 or higher.
This issue was patched in RHSA-2024:2456.

NVD Description

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

An out-of-bounds read flaw was found on grub2's NTFS filesystem driver. This issue may allow a physically present attacker to present a specially crafted NTFS file system image to read arbitrary memory locations. A successful attack allows sensitive data cached in memory or EFI variable values to be leaked, presenting a high Confidentiality risk.

CVSS Scores

version 3.1