Don't allow 127.0.0.1 as SRVHOST

Author: jvazquez-r7

modules/exploits/freebsd/misc/citrix_netscaler_soap_bof.rb

@@ -88,8 +88,8 @@ def check
   end
 
   def exploit
-    if datastore['SRVHOST'] == '0.0.0.0'
-      fail_with(Failure::BadConfig, 'Don\'t use 0.0.0.0 as SRVHOST, use an address on the local machine reachable by the target')
+    if ['0.0.0.0', '127.0.0.1'].include?(datastore['SRVHOST'])
+      fail_with(Failure::BadConfig, 'Bad SRVHOST, use an address on the local machine reachable by the target')
     end
 
     if check != Exploit::CheckCode::Detected