Secunia Security Advisory – Ubuntu has issued an update for screen. This fixes some vulnerabilities, which can be exploited to cause a DoS (Denial of Service) and potentially compromise a vulnerable system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/51573/sa22649.txt
Source: https://packetstormsecurity.com/files/51573/Secunia-Security-Advisory-22649.html