Ubuntu Security Notice 645-3 – USN-645-1 fixed vulnerabilities in Firefox and xulrunner. The upstream patches introduced a regression in the saved password handling. While password data was not lost, if a user had saved any passwords with non-ASCII characters, Firefox could not access the password database. This update fixes the problem. A very large amount of vulnerabilities have been addressed in the latest Firefox release from Ubuntu.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/70352/USN-645-3.txt
Source: https://packetstormsecurity.com/files/70352/Ubuntu-Security-Notice-645-3.html