Out-of-bounds Write Affecting grub2 package, versions <2.04-16


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-DEBIAN13-GRUB2-5681771
  • published3 Mar 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 Debian:13 grub2 to version 2.04-16 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2 package and not the grub2 package as distributed by Debian. See How to fix? for Debian:13 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