Bug 2120701 (CVE-2022-34303)

Summary:	CVE-2022-34303 shim: 3rd party shim allow secure boot bypass
Product:	[Other] Security Response	Reporter:	Marco Benatto <mbenatto>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	bootloader-eng-team, fmartine, mjg59, pjones, rhughes
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-05-09 16:35:05 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1991048, 2120703, 2120706, 2120707, 2120708
Bug Blocks:	2120649

Description Marco Benatto 2022-08-23 15:02:01 UTC

A flaw was found in Eurosoft bootloaders before 2022-06-01. An attacker may use this bootloader to bypass or tamper with Secure Boot protections. In order to load and execute arbitrary code in the pre-boot stage, an attacker simply needs to replace the existing signed bootloader currently in use with this bootloader. Access to the EFI System Partition is required for booting using external media.

Comment 1 Marco Benatto 2022-08-23 15:03:32 UTC

Created fwupd tracking bugs for this issue:

Affects: fedora-all [bug 2120703]

Comment 4 errata-xmlrpc 2023-05-09 07:52:47 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:2487 https://access.redhat.com/errata/RHSA-2023:2487

Comment 5 Product Security DevOps Team 2023-05-09 16:35:02 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2022-34303