CVE-2016-2120

Name	CVE-2016-2120
Description	An issue has been found in PowerDNS Authoritative Server versions up to and including 3.4.10, 4.0.1 allowing an authorized user to crash the server by inserting a specially crafted record in a zone under their control then sending a DNS query for that record. The issue is due to an integer overflow when checking if the content of the record matches the expected size, allowing an attacker to cause a read past the buffer boundary.
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-798-1, DSA-3764-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
pdns (PTS)	jessie, jessie (lts)	3.4.1-4+deb8u10	fixed
	stretch (security), stretch (lts), stretch	4.0.3-1+deb9u5	fixed
	buster	4.1.6-3+deb10u1	fixed
	bullseye	4.4.1-1	fixed
	bookworm	4.7.3-2	fixed
	sid, trixie	4.9.3-1	fixed

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

Package	Type	Release	Fixed Version	Origin
pdns	source	wheezy	3.1-4.1+deb7u3	DLA-798-1
pdns	source	jessie	3.4.1-4+deb8u7	DSA-3764-1
pdns	source	(unstable)	4.0.2-1

https://doc.powerdns.com/md/security/powerdns-advisory-2016-05/