CVE-2021-20233

State: Published
Severity: Not scored
Published: Mar 3, 2021
Updated: Aug 3, 2024
Reserved: Dec 17, 2020

Description

A flaw was found in grub2 in versions prior to 2.06. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Scores

The record has no CVSS score.

Weaknesses

CWE-787

Affected Products

Product	Versions
grub2n/a	grub 2.06Affected

References

https://bugzilla.redhat.com/show_bug.cgi?id=1926263
FEDORA-2021-cab258a413vendor-advisory
GLSA-202104-05vendor-advisory
https://security.netapp.com/advisory/ntap-20220325-0001/

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