CVE-2019-12098

Name	CVE-2019-12098
Description	In the client side of Heimdal before 7.6.0, failure to verify anonymous PKINIT PA-PKINIT-KX key exchange permits a man-in-the-middle attack. This issue is in krb5_init_creds_step in lib/krb5/init_creds_pw.c.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
References	DSA-4455-1
Debian Bugs	929064

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	fixed
	bullseye	7.7.0+dfsg-2	fixed
	bookworm, sid	7.7.0+dfsg-4	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
heimdal	source	stretch	7.1.0+dfsg-13+deb9u3		DSA-4455-1
heimdal	source	(unstable)	7.5.0+dfsg-3			929064

Notes

[jessie] - heimdal <no-dsa> (Minor issue)
Fixed by: https://github.com/heimdal/heimdal/commit/2f7f3d9960aa6ea21358bdf3687cee5149aa35cf (7.6.0)
Introduced by: https://github.com/heimdal/heimdal/commit/a1ef548600c5bb51cf52a9a9ea12676506ede19f (1.4.0)