Secunia Security Advisory – Ubuntu has issued an update for libxml2. This fixes some vulnerabilities, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise an application using the library.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/80388/sa36280.txt
Source: https://packetstormsecurity.com/files/80388/Secunia-Security-Advisory-36280.html