Multicast DNS and DNS service discovery daemons deployed on various systems across the Internet are misconfigured and reply to queries targeting their unicast addresses, including requests from their WAN interface. These daemons could be leveraged by attackers for sensitive information disclosure and potentially used in DDoS campaigns for reflection and in some cases amplification.
more here....http://www.kb.cert.org/vuls/
and here.....https://github.com/chadillac/
more here....http://www.kb.cert.org/vuls/
and here.....https://github.com/chadillac/