CVE-2022-28735

CVE Details

Release Date:	2022-06-07
Impact:	Moderate	What is this?

Description

The GRUB2's shim_lock verifier allows non-kernel files to be loaded on shim-powered secure boot systems. Allowing such files to be loaded may lead to unverified code and modules to be loaded in GRUB2 breaking the secure boot trust-chain.

See more information about CVE-2022-28735 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	6.7
Vector String:	CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Version:	3.0
Attack Vector:	Local
Attack Complexity:	Low
Privileges Required:	High
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	High
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (grub2)	ELSA-2022-9469	2022-06-07
Oracle Linux version 7 (grub2)	ELSA-2023-12952	2023-10-27
Oracle Linux version 8 (grub2)	ELSA-2022-5095	2022-07-04
Oracle Linux version 8 (grub2)	ELSA-2022-9471	2022-06-07
Oracle Linux version 8 (grub2)	ELSA-2022-9595	2022-07-14
Oracle Linux version 9 (grub2)	ELSA-2022-5099	2022-06-30
Oracle Linux version 9 (grub2)	ELSA-2022-9596	2022-07-14