The remote host is missing an update to net-snmp announced via advisory DSA 873-1. A security vulnerability has been found in Net-SNMP releases that could allow a denial of service attack against Net-SNMP agent's that have opened a stream based protocol (eg TCP but not UDP). By default, Net-SNMP does not open a TCP port. The old stable distribution (woody) does not contain a net-snmp package.

For the stable distribution (sarge) this problem has been fixed in version 5.1.2-6.2. For the unstable distribution (sid) this problem has been fixed in version 5.2.1.2-1. We recommend that you upgrade your net-snmp package. https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20873-1