Authentication Bypass Affecting grub2-tools-extra-debuginfo package, versions <1:2.06-61.amzn2023.0.11


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.06% (27th percentile)

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  • Snyk IDSNYK-AMZN2023-GRUB2TOOLSEXTRADEBUGINFO-6394294
  • published6 Mar 2024
  • disclosed15 Jan 2024

Introduced: 15 Jan 2024

CVE-2023-4001  (opens in a new tab)
CWE-290  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 grub2-tools-extra-debuginfo to version 1:2.06-61.amzn2023.0.11 or higher.
This issue was patched in ALAS2023-2024-555.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2-tools-extra-debuginfo package and not the grub2-tools-extra-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

An authentication bypass flaw was found in GRUB due to the way that GRUB uses the UUID of a device to search for the configuration file that contains the password hash for the GRUB password protection feature. An attacker capable of attaching an external drive such as a USB stick containing a file system with a duplicate UUID (the same as in the "/boot/" file system) can bypass the GRUB password protection feature on UEFI systems, which enumerate removable drives before non-removable ones. This issue was introduced in a downstream patch in Red Hat's version of grub2 and does not affect the upstream package.

CVSS Scores

version 3.1