Secunia Security Advisory – Ubuntu has issued an update for ipsec-tools. This fixes a vulnerability, which can be exploited by malicious people to cause a DoS (Denial of Service).
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/78235/sa35404.txt
Source: https://packetstormsecurity.com/files/78235/Secunia-Security-Advisory-35404.html