Secunia Security Advisory – Ubuntu has issued an update for net-snmp. This fixes some vulnerabilities, which can be exploited by malicious people to spoof authenticated SNMPv3 packets, cause a DoS (Denial of Service), and compromise a vulnerable system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/72633/sa33003.txt
Source: https://packetstormsecurity.com/files/72633/Secunia-Security-Advisory-33003.html