| Name | CVE-2016-5427 |
| Description | PowerDNS (aka pdns) Authoritative Server before 3.4.10 does not properly handle a . (dot) inside labels, which allows remote attackers to cause a denial of service (backend CPU consumption) via a crafted DNS query. |
| 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-627-1, DSA-3664-1 |
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 | Urgency | Origin | Debian Bugs |
|---|
| pdns | source | wheezy | 3.1-4.1+deb7u2 | | DLA-627-1 | |
| pdns | source | jessie | 3.4.1-4+deb8u6 | | DSA-3664-1 | |
| pdns | source | (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