CVE-2016-5426

NameCVE-2016-5426
DescriptionPowerDNS (aka pdns) Authoritative Server before 3.4.10 allows remote attackers to cause a denial of service (backend CPU consumption) via a long qname.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-627-1, DSA-3664-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
pdns (PTS)jessie, jessie (lts)3.4.1-4+deb8u10fixed
stretch (security), stretch (lts), stretch4.0.3-1+deb9u5fixed
buster4.1.6-3+deb10u1fixed
bullseye4.4.1-1fixed
bookworm4.7.3-2fixed
sid, trixie4.9.3-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
pdnssourcewheezy3.1-4.1+deb7u2DLA-627-1
pdnssourcejessie3.4.1-4+deb8u6DSA-3664-1
pdnssource(unstable)4.0.0~alpha1-1

Notes

Only affects PowerDNS Authoritative Server up to and including 3.4.9, 4.x not affected
Added workaround to mark first 4.x version in unstable as fixed.
https://doc.powerdns.com/md/security/powerdns-advisory-2016-01/
https://github.com/PowerDNS/pdns/commit/881b5b03a590198d03008e4200dd00cc537712f3

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