Buffer overflow in No-IP DUC 2.1.7 and earlier allows remote HTTP servers to execute arbitrary code via a crafted response to a DNS update request, related to a missing length check in the GetNextLine function.
https://www.exploit-db.com/exploits/7151
https://exchange.xforce.ibmcloud.com/vulnerabilities/46696
http://www.securityfocus.com/bid/32344
http://www.openwall.com/lists/oss-security/2008/11/21/15
http://www.debian.org/security/2008/dsa-1686
http://securityreason.com/securityalert/4672
http://security.gentoo.org/glsa/glsa-200901-12.xml
http://secunia.com/advisories/33610
http://secunia.com/advisories/33138