CVE-2020-27779

 

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

Last modified: - 21-10-2022 09:23

Total changes: - 7

Description

A flaw was found in grub2 in versions prior to 2.06. The cutmem command does not honor secure boot locking allowing an privileged attacker to remove address ranges from memory creating an opportunity to circumvent SecureBoot protections after proper triage about grub's memory layout. 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:H/PR:H/UI:N/S:C/C:H/I:H/A:H

 

Verification logic

 

Reference

• https://bugzilla.redhat.com/show_bug.cgi?id=1900698
• FEDORA-2021-cab258a413-Mailing List, Third Party Advisory
• GLSA-202104-05-Third Party Advisory
• https://security.netapp.com/advisory/ntap-20220325-0001/

 

Keywords

NVD

 

CVE-2020-27779

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures