Bug 2090857 (CVE-2022-28735) - CVE-2022-28735 grub2: shim_lock verifier allows non-kernel files to be loaded
Summary: CVE-2022-28735 grub2: shim_lock verifier allows non-kernel files to be loaded
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2022-28735
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2090862 2090864 2090858 2090859 2090860 2090861 2090863
Blocks: 1991681
TreeView+ depends on / blocked
 
Reported: 2022-05-26 17:52 UTC by Marco Benatto
Modified: 2022-07-19 15:32 UTC (History)
8 users (show)

Fixed In Version: grub 2.12
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in grub2. The shim_lock verifier from grub2 allows non-kernel files to be loaded when secure boot is enabled, giving the possibility of unverified code or modules to be loaded when it should not be allowed.
Clone Of:
Environment:
Last Closed: 2022-06-16 22:07:11 UTC


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2022:5105 0 None None None 2022-06-16 21:08:40 UTC
Red Hat Product Errata RHBA-2022:5121 0 None None None 2022-06-20 01:27:31 UTC
Red Hat Product Errata RHBA-2022:5127 0 None None None 2022-06-20 12:12:13 UTC
Red Hat Product Errata RHBA-2022:5128 0 None None None 2022-06-20 14:27:08 UTC
Red Hat Product Errata RHBA-2022:5170 0 None None None 2022-06-22 11:38:38 UTC
Red Hat Product Errata RHBA-2022:5437 0 None None None 2022-06-30 07:15:21 UTC
Red Hat Product Errata RHBA-2022:5578 0 None None None 2022-07-13 15:10:22 UTC
Red Hat Product Errata RHBA-2022:5643 0 None None None 2022-07-19 15:32:31 UTC
Red Hat Product Errata RHSA-2022:5095 0 None None None 2022-06-16 15:34:06 UTC
Red Hat Product Errata RHSA-2022:5096 0 None None None 2022-06-16 14:55:43 UTC
Red Hat Product Errata RHSA-2022:5098 0 None None None 2022-06-16 13:51:25 UTC
Red Hat Product Errata RHSA-2022:5099 0 None None None 2022-06-16 15:24:05 UTC
Red Hat Product Errata RHSA-2022:5100 0 None None None 2022-06-16 15:46:15 UTC

Description Marco Benatto 2022-05-26 17:52:48 UTC
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 grub breaking the secure boot trust-chain.

Comment 2 errata-xmlrpc 2022-06-16 13:51:22 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions

Via RHSA-2022:5098 https://access.redhat.com/errata/RHSA-2022:5098

Comment 3 errata-xmlrpc 2022-06-16 14:55:40 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Extended Update Support

Via RHSA-2022:5096 https://access.redhat.com/errata/RHSA-2022:5096

Comment 4 errata-xmlrpc 2022-06-16 15:24:02 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2022:5099 https://access.redhat.com/errata/RHSA-2022:5099

Comment 5 errata-xmlrpc 2022-06-16 15:34:03 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2022:5095 https://access.redhat.com/errata/RHSA-2022:5095

Comment 6 errata-xmlrpc 2022-06-16 15:46:12 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2022:5100 https://access.redhat.com/errata/RHSA-2022:5100

Comment 7 Product Security DevOps Team 2022-06-16 22:07:09 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-2022-28735


Note You need to log in before you can comment on or make changes to this bug.