Ubuntu Security Notice 1464-1 - It was discovered that the Ubuntu Single Sign On Client incorrectly validated server certificates when using HTTPS connections. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could be exploited to alter or compromise confidential information.
289394b386becc411d1da7e03909df1856271f711709c51b346d29cd31c165ae