Out-of-bounds Read Affecting grub2 package, versions [,2.02-beta3)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.01% (1st percentile)

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  • Snyk IDSNYK-UNMANAGED-GRUB2-9673830
  • published5 Oct 2023
  • disclosed3 Oct 2023
  • creditDaniel Kiper

Introduced: 3 Oct 2023

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

How to fix?

Upgrade grub2 to version 2.02-beta3 or higher.

Overview

Affected versions of this package are vulnerable to Out-of-bounds Read in the fs/ntfs.c function. An attacker can read arbitrary memory locations by presenting a specially crafted NTFS file system image. A successful attack allows sensitive data cached in memory or EFI variable values to be leaked.

Note: This is only exploitable if the attacker is physically present and can deploy an NTFS file system image.

CVSS Base Scores

version 3.1