PowerDNS: Denial of Service vulnerability

Background

The PowerDNS Nameserver is an authoritative-only nameserver which uses a flexible backend architecture.

Description

A vulnerability has been reported in the DNSPacket::expand method of dnspacket.cc.

Impact

An attacker could cause a temporary Denial of Service by sending a random stream of bytes to the PowerDNS Daemon.

Workaround

There is no known workaround at this time.

Resolution

All PowerDNS users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=net-dns/pdns-2.9.17"