Ubuntu Security Notice 6406-1 - Several security issues were discovered in the SpiderMonkey JavaScript library. If a user were tricked into opening malicious JavaScript applications or processing malformed data, a remote attacker could exploit a variety of issues related to JavaScript security, including denial of service attacks, and arbitrary code execution.
25de3c8dd39492ae9ee3a9bd07e4d5238e4246b6951dd3dbfb8c5854dceaefd0