CVEvulnerability

CVE-2021-20225

6.7 MEDIUM Published 2021-03-03 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-03-03
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.7 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.2 HIGH — AV:L/AC:L/Au:N/C:C/I:C/A:C
Weaknesses
CWE-787

Description

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.

Affected configurations

• gnu grub2 (< 2.06) • redhat enterprise linux 7.0 • redhat enterprise linux 8.0 • redhat enterprise linux server aus 7.2 • redhat enterprise linux server aus 7.3 • redhat enterprise linux server aus 7.4 • redhat enterprise linux server aus 7.6 • redhat enterprise linux server aus 7.7 • redhat enterprise linux server aus 8.2 • redhat enterprise linux server eus 7.6 • redhat enterprise linux server eus 7.7 • redhat enterprise linux server eus 8.1 • redhat enterprise linux server tus 7.4 • redhat enterprise linux server tus 7.6 • redhat enterprise linux server tus 7.7 • redhat enterprise linux server tus 8.2 • redhat enterprise linux workstation 7.0 • fedoraproject fedora 33 • fedoraproject fedora 34 • netapp ontap select deploy administration utility

Related

Weakness · CWE (1)

  • CWE-787 Out-of-bounds Write weakness

References