Secunia Security Advisory – Ubuntu has issued an update for krb5. This fixes a vulnerability, which can potentially be exploited by malicious people to cause a DoS (Denial of Service) or compromise a vulnerable system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/53708/sa23772.txt
Source: https://packetstormsecurity.com/files/53708/Secunia-Security-Advisory-23772.html