Ubuntu Security Notice 492-1 – A flaw was discovered in the BGP dissector of tcpdump. Remote attackers could send specially crafted packets and execute arbitrary code with user privileges.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/58206/USN-492-1.txt
Source: https://packetstormsecurity.com/files/58206/Ubuntu-Security-Notice-492-1.html