CVE-2014-4344

Name	CVE-2014-4344
Description	The acc_ctx_cont function in the SPNEGO acceptor in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5.x through 1.12.x before 1.12.2 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an empty continuation token at a certain point during a SPNEGO negotiation.
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-37-1, DSA-3000-1
Debian Bugs	755521

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
krb5 (PTS)	bullseye, bullseye (security)	1.18.3-6+deb11u5	fixed
	bookworm, bookworm (security)	1.20.1-2+deb12u2	fixed
	sid, trixie	1.21.3-3	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
krb5	source	squeeze	1.8.3+dfsg-4squeeze8
krb5	source	wheezy	1.10.1+dfsg-5+deb7u2	DSA-3000-1
krb5	source	(unstable)	1.12.1+dfsg-5		755521

https://github.com/krb5/krb5/commit/524688ce87a15fc75f87efc8c039ba4c7d5c197b