source: http://www.securityfocus.com/bid/9989/info

It has been reported that NSTX is prone to a remote denial of service vulnerability. This issue is due to a failure of the application to handle network strings of excessive length.

This issue may allow a remote attacker to cause the affected process to crash, denying service to legitimate users.

remote-hacker$ perl -e '{ print "A" x 500 }' | nc -u www.example.com