Out-of-bounds Write Affecting grub2-common package, versions <1:2.06-2.amzn2.0.1


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-AMZN2-GRUB2COMMON-1702244
  • published27 Sept 2021
  • disclosed3 Mar 2021

Introduced: 3 Mar 2021

CVE-2021-20225  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 grub2-common to version 1:2.06-2.amzn2.0.1 or higher.
This issue was patched in ALAS2-2021-1684.

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.

A flaw was found in grub2 in versions prior to 2.06. The option parser allows an attacker to write past the end of a heap-allocated buffer by calling certain commands with a large number of specific short forms of options. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

CVSS Scores

version 3.1