CVE-2020-25632

Common vulnerabilities & exposures (CVE)

CVE database CVE database blogpost Release & EoL database

Published at: - 03-03-2021 06:15

Last modified: - 13-05-2022 10:51

Total changes: - 7

Description

A flaw was found in grub2 in versions prior to 2.06. The rmmod implementation allows the unloading of a module used as a dependency without checking if any other dependent module is still loaded leading to a use-after-free scenario. This could allow arbitrary code to be executed or a bypass of Secure Boot protections. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Low

Attack complexity

Local

Attack vector

High

Availability

High

Confidentiality

High

Integrity

High

Privileges required

Changed

Scope

None

User interaction

8.2

Base score

1.5

6.0

Exploitability score

Impact score

Verification logic

vendor=gnu AND product=grub2 AND versionEndExcluding=2.06

vendor=Red Hat Enterprise Linux AND product=enterprise_linux_server_aus AND version=7.2

vendor=Red Hat Enterprise Linux AND product=enterprise_linux_workstation AND version=7.0

vendor=Red Hat Enterprise Linux AND product=enterprise_linux AND version=7.0

vendor=Red Hat Enterprise Linux AND product=enterprise_linux_server_aus AND version=7.3

vendor=Red Hat Enterprise Linux AND product=enterprise_linux_server_aus AND version=7.4

vendor=Red Hat Enterprise Linux AND product=enterprise_linux_server_tus AND version=7.4

vendor=Red Hat Enterprise Linux AND product=enterprise_linux_server_tus AND version=7.6

vendor=Red Hat Enterprise Linux AND product=enterprise_linux_server_eus AND version=7.6

vendor=Red Hat Enterprise Linux AND product=enterprise_linux_server_aus AND version=7.6

vendor=Red Hat Enterprise Linux AND product=enterprise_linux AND version=8.0

vendor=Red Hat Enterprise Linux AND product=enterprise_linux_server_aus AND version=7.7

vendor=Red Hat Enterprise Linux AND product=enterprise_linux_server_aus AND version=8.2

vendor=Red Hat Enterprise Linux AND product=enterprise_linux_server_eus AND version=7.7

vendor=Red Hat Enterprise Linux AND product=enterprise_linux_server_eus AND version=8.1

vendor=Red Hat Enterprise Linux AND product=enterprise_linux_server_tus AND version=7.7

vendor=Red Hat Enterprise Linux AND product=enterprise_linux_server_tus AND version=8.2

vendor=fedoraproject AND product=fedora AND version=33

vendor=fedoraproject AND product=fedora AND version=34

vendor=netapp AND product=ontap_select_deploy_administration_utility AND version=-

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=1879577
FEDORA-2021-cab258a413-Mailing List, Third Party Advisory
GLSA-202104-05-Third Party Advisory
https://security.netapp.com/advisory/ntap-20220325-0001/

Keywords

CVE-2020-25632

Common vulnerabilities & exposures (CVE)

Description

Common Vulnerability Scoring System (CVSS)

Verification logic

Reference

NVD

CVE-2020-25632

CVE

Common vulnerabilities & exposures

CVSS

Common vulnerability scoring system

Security

Vulnerabilities

Exposures