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Out-of-bounds Write Affecting grub2 package, versions <2.04-9.34.1

0.0
high

Snyk CVSS

    Attack Complexity High
    Privileges Required High
    Scope Changed
    Confidentiality High
    Integrity High
    Availability High
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NVD
6.7 medium
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SUSE
7.5 high
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Red Hat
7.5 high

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  • Snyk ID SNYK-SLES152-GRUB2-2687141
  • published 14 Apr 2022
  • disclosed 2 Mar 2021
Report a new vulnerability Found a mistake?

Introduced: 2 Mar 2021

CVE-2021-20225 Open this link in a new tab
CWE-787 Open this link in a new tab

How to fix?

Upgrade SLES:15.2 grub2 to version 2.04-9.34.1 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 SLES:15.2. See How to fix? for SLES:15.2 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.