Out-of-bounds Write Affecting grub2 package, versions [,2.06)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-UNMANAGED-GRUB2-2368573
  • published26 Jan 2022
  • disclosed3 Mar 2021
  • creditUnknown

Introduced: 3 Mar 2021

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

How to fix?

Upgrade grub2 to version 2.06 or higher.

Overview

Affected versions of this package are vulnerable to Out-of-bounds Write. 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