CyberRota Analysis
This is a high severity vulnerability with a CVSS score of 8.2. See the original NVD description below for full technical details.
CVE
CVE-2021-20233
Severity
HIGH
CVSS
8.2
EPSS
0.60%
Original NVD 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.
Related CVEs
Other vulnerabilities affecting the same vendor(s)