The remote host is missing an update to libwebkit-1.0-2 announced via advisory USN-1195-1.
Details:
A large number of security issues were discovered in the WebKit browser 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.
Solution: The problem can be corrected by updating your system to the following package versions: