| Name | CVE-2017-15120 |
| Description | An issue has been found in the parsing of authoritative answers in PowerDNS Recursor before 4.0.8, leading to a NULL pointer dereference when parsing a specially crafted answer containing a CNAME of a different class than IN. An unauthenticated remote attacker could cause a denial of service. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-4063-1 |
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 |
| sid, trixie | 4.9.2-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[jessie] - pdns-recursor <not-affected> (Vulnerable code introduced in 4.0.0)
[wheezy] - pdns-recursor <not-affected> (Vulnerable code introduced in 4.0.0)
Patch: https://downloads.powerdns.com/patches/2017-08
https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-08.html