CVE-2022-41916

Name	CVE-2022-41916
Description	Heimdal is an implementation of ASN.1/DER, PKIX, and Kerberos. Versions prior to 7.7.1 are vulnerable to a denial of service vulnerability in Heimdal's PKI certificate validation library, affecting the KDC (via PKINIT) and kinit (via PKINIT), as well as any third-party applications using Heimdal's libhx509. Users should upgrade to Heimdal 7.7.1 or 7.8. There are no known workarounds for this issue.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-3206-1, DSA-5287-1
Debian Bugs	1024187

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
heimdal (PTS)	buster	7.5.0+dfsg-3	vulnerable
	buster (security)	7.5.0+dfsg-3+deb10u2	fixed
	bullseye (security), bullseye	7.7.0+dfsg-2+deb11u3	fixed
	bookworm	7.8.git20221117.28daf24+dfsg-2	fixed
	trixie	7.8.git20221117.28daf24+dfsg-4	fixed
	sid	7.8.git20221117.28daf24+dfsg-5	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
heimdal	source	buster	7.5.0+dfsg-3+deb10u1	DLA-3206-1
heimdal	source	bullseye	7.7.0+dfsg-2+deb11u2	DSA-5287-1
heimdal	source	(unstable)	7.8.git20221115.a6cf945+dfsg-1		1024187

Notes

https://github.com/heimdal/heimdal/security/advisories/GHSA-mgqr-gvh6-23cx
https://github.com/heimdal/heimdal/commit/eb87af0c2d189c25294c7daf483a47b03af80c2c (heimdal-7.7.1)