CVE-2018-16853

Name	CVE-2018-16853
Description	Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when Samba is built in the non-default MIT Kerberos configuration. With this advisory the Samba Team clarify that the MIT Kerberos build of the Samba AD DC is considered experimental. Therefore the Samba Team will not issue security patches for this configuration. Additionally, Samba 4.7.12, 4.8.7 and 4.9.3 have been issued as security releases to prevent building of the AD DC with MIT Kerberos unless --with-experimental-mit-ad-dc is specified to the configure command.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
samba (PTS)	bullseye (security), bullseye	2:4.13.13+dfsg-1~deb11u6	fixed
	bookworm	2:4.17.12+dfsg-0+deb12u2	fixed
	bookworm (security)	2:4.17.12+dfsg-0+deb12u1	fixed
	trixie	2:4.22.4+dfsg-1~deb13u1	fixed
	forky, sid	2:4.23.2+dfsg-1	fixed

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

Package	Type	Release	Fixed Version	Urgency
samba	source	jessie	(not affected)
samba	source	stretch	(not affected)
samba	source	(unstable)	2:4.9.2+dfsg-2	unimportant

Notes

[stretch] - samba <not-affected> (Vulnerable code not present)
[jessie] - samba <not-affected> (Vulnerable code not present)
https://www.samba.org/samba/security/CVE-2018-16853.html
Samba in Debian is built with the default Heimdal Kerberos build