CVE-2019-6467

Name	CVE-2019-6467
Description	A programming error in the nxdomain-redirect feature can cause an assertion failure in query.c if the alternate namespace used by nxdomain-redirect is a descendant of a zone that is served locally. The most likely scenario where this might occur is if the server, in addition to performing NXDOMAIN redirection for recursive clients, is also serving a local copy of the root zone or using mirroring to provide the root zone, although other configurations are also possible. Versions affected: BIND 9.12.0-> 9.12.4, 9.14.0. Also affects all releases in the 9.13 development branch.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, 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
bind9 (PTS)	bullseye	1:9.16.48-1	fixed
	bullseye (security)	1:9.16.50-1~deb11u1	fixed
	bookworm	1:9.18.24-1	fixed
	bookworm (security)	1:9.18.28-1~deb12u1	fixed
	sid, trixie	1:9.20.0-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
bind9	source	(unstable)	(not affected)

- bind9 <not-affected> (Vulnerable code only present in 9.12 onwards)
https://kb.isc.org/docs/cve-2019-6467