Out-of-bounds Read Affecting grub2-unsigned package, versions <2.06-2ubuntu14.4


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.49% (40th percentile)

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  • Snyk IDSNYK-UBUNTU2004-GRUB2UNSIGNED-5927344
  • published4 Oct 2023
  • disclosed25 Oct 2023

Introduced: 4 Oct 2023

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

How to fix?

Upgrade Ubuntu:20.04 grub2-unsigned to version 2.06-2ubuntu14.4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2-unsigned package and not the grub2-unsigned package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 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 Base Scores

version 3.1