rescue mysql host blocked

rbmysql can throw an exception if the
server blocked this host due to too many connection errors

Author: David Maloney

lib/metasploit/framework/login_scanner/mysql.rb

@@ -70,6 +70,11 @@ def attempt_login(credential)
                 status: Metasploit::Model::Login::Status::INCORRECT,
                 proof: "Access Denied"
             })
+          rescue RbMysql::HostIsBlocked
+            result_options.merge!({
+                status: Metasploit::Model::Login::Status::UNABLE_TO_CONNECT,
+                proof: "Host blocked"
+            })
           end
 
           unless result_options[:status]