CVE-2018-14644

Name	CVE-2018-14644
Description	An issue has been found in PowerDNS Recursor from 4.0.0 up to and including 4.1.4. A remote attacker sending a DNS query for a meta-type like OPT can lead to a zone being wrongly cached as failing DNSSEC validation. It only arises if the parent zone is signed, and all the authoritative servers for that parent zone answer with FORMERR to a query for at least one of the meta-types. As a result, subsequent queries from clients requesting DNSSEC validation will be answered with a ServFail.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	913162

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
pdns-recursor (PTS)	buster, buster (security)	4.1.11-1+deb10u1	fixed
	bullseye	4.4.2-3	fixed
	bookworm	4.8.4-1	fixed
	bookworm (security)	4.8.7-1	fixed
	trixie	4.9.3-1	fixed
	sid	4.9.4-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
pdns-recursor	source	stretch	4.0.4-1+deb9u4
pdns-recursor	source	(unstable)	4.1.7-1			913162

Notes

[jessie] - pdns-recursor <ignored> (Minor issue)
https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-07.html
https://downloads.powerdns.com/patches/2018-07/
Patch backported for jessie https://git.fosscommunity.in/bhe/patches/raw/master/CVE-2018-14644.patch