DEBIAN-CVE-2023-40547: shim security update

DEBIAN-CVE-2023-40547, released January 25, 2024, fixes 1 CVE in shim. None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent

CVEs closed

1 rated Critical

Exploited

None reported

Highest CVSS

8.3

Base score, 0 to 10

Highest EPSS

0.0542

92nd percentile

Fixed package versions

Product	Release	Fixed in
shim	Debian 12.15 (bookworm)	15.8-1~deb12u1
shim	Debian 13.5 (trixie)	15.8-1
shim	Debian 14	15.8-1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Urgent	CVE-2023-40547	Redhat: CVE-2023-40547 Shim - RCE in HTTP boot support may lead to secure boot bypass	8.3	0.0542	Exploitation Less Likely

Also fixes CVE-2023-40547

KB5041573
Windows Server 2022, 23H2 Edition (Server Core installation)
KB5041571
Windows 11 Version 24H2 for ARM64-based Systems, Windows 11 Version 24H2 for x64-based Systems
KB5041580
Windows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 for ARM64-based Systems, Windows 10 Version 21H2 for x64-based Systems and 3 more
KB5041585
Windows 11 Version 22H2 for ARM64-based Systems, Windows 11 Version 22H2 for x64-based Systems, Windows 11 Version 23H2 for ARM64-based Systems and 1 more
KB5041773
Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems, Windows Server 2016 and 1 more
KB5041782
Windows 10 for 32-bit Systems, Windows 10 for x64-based Systems
KB5041160
Windows Server 2022, Windows Server 2022 (Server Core installation)
KB5041578
Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019 and 1 more

Vendor advisory

https://security-tracker.debian.org/tracker/CVE-2023-40547

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