Secunia Security Advisory – Ubuntu has issued an update for krb5. This fixes multiple vulnerabilities, which can be exploited by malicious users to cause a DoS (Denial of Service) and potentially compromise a vulnerable system and by malicious people to disclose potentially sensitive information or cause a DoS (Denial of Service).
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/89749/sa39784.txt
Source: https://packetstormsecurity.com/files/89749/Secunia-Security-Advisory-39784.html