Out-of-bounds Write Affecting grub2-tools-extra-debuginfo package, versions <1:2.06-61.amzn2023.0.3


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-AMZN2023-GRUB2TOOLSEXTRADEBUGINFO-3340197
  • published6 Mar 2023
  • disclosed6 Jul 2022

Introduced: 6 Jul 2022

CVE-2021-3697  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 grub2-tools-extra-debuginfo to version 1:2.06-61.amzn2023.0.3 or higher.
This issue was patched in ALAS2023-2023-020.

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.

A crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written in heap. To a successful to be performed the attacker needs to perform some triage over the heap layout and craft an image with a malicious format and payload. This vulnerability can lead to data corruption and eventual code execution or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.

CVSS Scores

version 3.1