Buffer overflow in PowerDNS Recursor 3.1.3 and earlier might allow remote attackers to execute arbitrary code via a malformed TCP DNS query that prevents Recursor from properly calculating the TCP DNS query length.
https://exchange.xforce.ibmcloud.com/vulnerabilities/30270
http://www.vupen.com/english/advisories/2006/4484
http://www.securityfocus.com/bid/21037
http://www.debian.org/security/2006/dsa-1211
http://secunia.com/advisories/22976
http://secunia.com/advisories/22903
http://secunia.com/advisories/22824
http://lists.suse.com/archive/suse-security-announce/2006-Nov/0007.html