Ubuntu Security Notice USN-3781-2

Ubuntu Security Notice 3781-2 – USN-3781-1 fixed vulnerabilities in WebKitGTK+. The updated package was missing some header files, preventing certain applications from building. This update fixes the problem. A large number of security issues were discovered in the WebKitGTK+ Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution. Various other issues were also addressed.

Link: https://packetstormsecurity.com/files/149746/USN-3781-2.txt