Inclusion of Functionality from Untrusted Control Sphere Affecting grub2-common package, versions <1:2.06-14.amzn2


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-AMZN2-GRUB2COMMON-5789237
  • published20 Jul 2023
  • disclosed20 Jul 2023

Introduced: 20 Jul 2023

CVE-2022-28735  (opens in a new tab)
CWE-829  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 grub2-common to version 1:2.06-14.amzn2 or higher.
This issue was patched in ALAS2-2023-2146.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2-common package and not the grub2-common package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

The GRUB2's shim_lock verifier allows non-kernel files to be loaded on shim-powered secure boot systems. Allowing such files to be loaded may lead to unverified code and modules to be loaded in GRUB2 breaking the secure boot trust-chain.

CVSS Scores

version 3.1