CVE-2023-5342

Shim: expired secure boot certificate

Description

The Fedora Secure Boot CA certificate shipped with shim in Fedora was expired which could lead to old or invalid signed boot components being loaded.

Category

4.1
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.01%
Affected: Red Hat Red Hat Enterprise Linux 10
Affected: Red Hat Red Hat Enterprise Linux 7
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 9
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/security/cve/CVE-2023-5342 vdb entry
https://bodhi.fedoraproject.org/updates/FEDORA-2024-2aa28a4cfc
https://bugzilla.redhat.com/show_bug.cgi?id=2198977
https://bugzilla.redhat.com/show_bug.cgi?id=2388707 issue tracking

Frequently Asked Questions

What is the severity of CVE-2023-5342?
CVE-2023-5342 has been scored as a medium severity vulnerability.
How to fix CVE-2023-5342?
To fix CVE-2023-5342, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-5342 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-5342 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-5342?
CVE-2023-5342 affects Red Hat Red Hat Enterprise Linux 10, Red Hat Red Hat Enterprise Linux 7, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 9.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.