Secunia Security Advisory – Ubuntu has issued an update for krb5. This fixes some vulnerabilities, which can be exploited by malicious people to disclose potentially sensitive information, cause a DoS (Denial of Service), or potentially compromise a vulnerable system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/64718/sa29438.txt
Source: https://packetstormsecurity.com/files/64718/Secunia-Security-Advisory-29438.html