Secunia Security Advisory – Ubuntu has issued an update for irssi. This fixes multiple vulnerabilities, which can be exploited by malicious people to cause a DoS (Denial of Service) and bypass certain security restrictions.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/88494/sa39449.txt
Source: https://packetstormsecurity.com/files/88494/Secunia-Security-Advisory-39449.html