CVE-2021-20233CWE-787

A flaw was found in grub2 in versions prior to 2.06

published March 3, 2021

CVSS
—
EPSS
1%
Percentile
48.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00605 · 48.3th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2021-03-03T16:44Z
EPSS history
Timeline
  • 03 MAR 16:44Z
    A flaw was found in grub2 in versions prior to 2.06
    cvelistv5