CVE-2019-16866

Name	CVE-2019-16866
Description	Unbound before 1.9.4 accesses uninitialized memory, which allows remote attackers to trigger a crash via a crafted NOTIFY query. The source IP address of the query must match an access-control rule.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-4544-1
Debian Bugs	941692

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
unbound (PTS)	jessie, jessie (lts)	1.4.22-3+deb8u4	fixed
	stretch	1.6.0-3+deb9u2	fixed
	buster (security), buster, buster (lts)	1.9.0-2+deb10u4	fixed
	bullseye	1.13.1-1+deb11u2	fixed
	bullseye (security)	1.13.1-1+deb11u3	fixed
	bookworm (security), bookworm	1.17.1-2+deb12u2	fixed
	sid, trixie	1.22.0-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
unbound	source	wheezy	(unfixed)	end-of-life
unbound	source	jessie	(not affected)
unbound	source	stretch	(not affected)
unbound	source	buster	1.9.0-2+deb10u1		DSA-4544-1
unbound	source	(unstable)	1.9.4-1			941692

Notes

[stretch] - unbound <not-affected> (Vulnerable code introduced in 1.7.1)
[jessie] - unbound <not-affected> (Vulnerable code introduced in 1.7.1)
https://nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txt
Patch: https://nlnetlabs.nl/downloads/unbound/patch_cve_2019-16866.diff
https://github.com/NLnetLabs/unbound/commit/b60c4a472c856f0a98120b7259e991b3a6507eb5
https://ostif.org/our-audit-of-unbound-dns-by-x41-d-sec-full-results/