CVE-2023-40546: Shim: out-of-bounds read printing error messages
First published: Mon Oct 02 2023(Updated: )
A flaw was found in Shim when an error happened while creating a new ESL variable. If Shim fails to create the new variable, it tries to print an error message to the user; however, the number of parameters used by the logging function doesn't match the format string used by it, leading to a crash under certain circumstances.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/shim | <15.8 | 15.8 |
| Redhat Shim | <15.8 | |
| Fedoraproject Fedora | =39 | |
| Red Hat Enterprise Linux | =8.0 | |
| Red Hat Enterprise Linux | =9.0 |
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Reference Links
- https://access.redhat.com/errata/RHSA-2024:1834
- https://access.redhat.com/errata/RHSA-2024:1835
- https://access.redhat.com/errata/RHSA-2024:1873
- https://access.redhat.com/errata/RHSA-2024:1876
- https://access.redhat.com/errata/RHSA-2024:1883
- https://access.redhat.com/errata/RHSA-2024:1902
- https://access.redhat.com/errata/RHSA-2024:1903
- https://access.redhat.com/errata/RHSA-2024:1959
- https://access.redhat.com/errata/RHSA-2024:2086
- https://access.redhat.com/security/cve/CVE-2023-40546
- https://bugzilla.redhat.com/show_bug.cgi?id=2241796
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2259922
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2234589#c17
- https://lists.debian.org/debian-lts-announce/2024/05/msg00009.html
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- version/fedoraproject fedora/39
- canonical/red hat enterprise linux
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- version/red hat enterprise linux/9.0