Debian Linux Security Advisory 2069-1 – It was discovered that znc, an IRC bouncer, is vulnerable to denial of service attacks via a NULL pointer dereference when traffic statistics are requested while there is an unauthenticated connection.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/91722/dsa-2069-1.txt
Source: https://packetstormsecurity.com/files/91722/Debian-Linux-Security-Advisory-2069-1.html