some functions prevented for security reasons

git-svn-id: https://beef.googlecode.com/svn/trunk@1333 b87d56ec-f9c0-11de-8c8a-61c5e9addfc9

core/ruby/security.rb

@@ -15,7 +15,26 @@
 #
 
 # @note Prevent eval from ever being used
-def eval(args)
-  puts "For security reasons the eval method is not accepted in the Browser Exploitation Framework code base."
+# def eval(args)
+#   puts "For security reasons the eval method is not accepted in the Browser Exploitation Framework code base."
+#   exit
+# end
+
+# @note Prevent exec from ever being used
+def exec(args)
+  puts "For security reasons the exec method is not accepted in the Browser Exploitation Framework code base."
   exit
 end
+
+# @note Prevent system from ever being used
+def system(args)
+  puts "For security reasons the system method is not accepted in the Browser Exploitation Framework code base."
+  exit
+end
+
+# @note Prevent Kernel.system from ever being used
+def Kernel.system(args)
+  puts "For security reasons the Kernel.system method is not accepted in the Browser Exploitation Framework code base."
+  exit
+end
+