CVE-2023-40549

NameCVE-2023-40549
DescriptionAn out-of-bounds read flaw was found in Shim due to the lack of proper boundary verification during the load of a PE binary. This flaw allows an attacker to load a crafted PE binary, triggering the issue and crashing Shim, resulting in a denial of service.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1061519

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
shim (PTS)buster15.4-7~deb10u1vulnerable
buster (security)15.7-1~deb10u1vulnerable
bullseye15.7-1~deb11u1vulnerable
sid, trixie, bookworm15.7-1vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
shimsource(unstable)(unfixed)1061519

Notes

https://bugzilla.redhat.com/show_bug.cgi?id=2241797
https://github.com/rhboot/shim/commit/afdc5039de0a4a3a40162a32daa070f94a883f09 (15.8)

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