CVE-2023-40550: Shim: out-of-bound read in verify_buffer_sbat()
First published: Tue Jan 23 2024(Updated: )
An out-of-bounds read flaw was found in Shim when it tried to validate the SBAT information. This issue may expose sensitive data during the system's boot phase.
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-2023-40550
- https://bugzilla.redhat.com/show_bug.cgi?id=2259915
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2259916
- 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/red hat enterprise linux/9.0