OpenPKG Security Advisory – A Denial of Service (DoS) vulnerability exists in the Ratbox IRC Daemon, versions up to and including 2.2.5. Too many pending connections to the server from a single unknown client could result in a resource starvation.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/56855/OpenPKG-SA-2007.017.txt
Source: https://packetstormsecurity.com/files/56855/OpenPKG-Security-Advisory-2007.17.html