Ubuntu Security Notice USN-1464-1
June 06, 2012
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.10
- Ubuntu 11.04
Fraudulent security certificates could allow sensitive information to
be exposed when accessing the Internet.
- ubuntu-sso-client: Ubuntu Single Sign-On client
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.
The problem can be corrected by updating your system to the following
In general, a standard system update will make all the necessary changes.