Out-of-bounds Read Affecting grub2 package, versions <2.06-3~deb11u6


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.07% (31st percentile)

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  • Snyk IDSNYK-DEBIAN11-GRUB2-5927136
  • 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 Debian:11 grub2 to version 2.06-3~deb11u6 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2 package and not the grub2 package as distributed by Debian. See How to fix? for Debian:11 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