CVE-2018-14644

NameCVE-2018-14644
DescriptionAn 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs913162

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
pdns-recursor (PTS)bullseye4.4.2-3fixed
bookworm, bookworm (security)4.8.8-1fixed
sid, trixie5.1.3-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
pdns-recursorsourcestretch4.0.4-1+deb9u4
pdns-recursorsource(unstable)4.1.7-1913162

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

Search for package or bug name: Reporting problems