This document is about PowerDNS 4.X. If you have PowerDNS 3.X, please see the PowerDNS 3.X documentation

PowerDNS Security Advisory 2010-01: PowerDNS Recursor up to and including 3.1.7.1 can be brought down and probably exploited

Using specially crafted packets, it is possible to force a buffer overflow in the PowerDNS Recursor, leading to a crash.

This vulnerability was discovered by a third party that (for now) prefers not to be named. PowerDNS is very grateful however for their help in improving PowerDNS security.