Secunia Security Advisory – Ubuntu has issued an update for likewise-open. This fixes a vulnerability, which can be exploited by malicious, local users to bypass certain security features.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/92205/sa40736.txt
Source: https://packetstormsecurity.com/files/92205/Secunia-Security-Advisory-40736.html