CVE-2021-20233
8.2
Vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Exploitability: 1.5 / Impact: 6.0
Source: 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.
Affected (20)
Products: Gnu: Grub2 · Redhat: Enterprise Linux, Enterprise Linux Server Aus, Enterprise Linux Server Eus, Enterprise Linux Server Tus, Enterprise Linux Workstation · Fedoraproject: Fedora · +1 more
Configuration B
| Vulnerable Software | Affected Versions |
|---|---|
| Version 7.0 | |
| Version 7.2 | |
| Version 7.6 | |
| Version 7.4 | |
| Version 7.0 |
Configuration C
| Vulnerable Software | Affected Versions |
|---|---|
| Version 33 |
Configuration D
| Vulnerable Software | Affected Versions |
|---|---|
| All versions |
References (8)
Source: secalert@redhat.com
Issue TrackingPatchThird Party Advisory
Source: secalert@redhat.com
Source: secalert@redhat.com
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Issue TrackingPatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Timeline
No history available yet.