source: https://www.securityfocus.com/bid/9519/info

A problem has been identified in the handling of specific types of requests by SurfNOW. Upon receiving specially crafted HTTP GET requests, it is possible for a remote attacker to crash a vulnerable implementation, denying service to the user.

GET \aaaaaaaaaaaaa[ 490 kb of a ]aaaa HTTP/1.1\n\n\n