      def ismaster_command?(incoming_message)
        data = StringIO.new(incoming_message)
        data.read(20) # header and flags
        data.gets("\x00") # collection name
        data.read(8) # skip/limit

        selector = Moped::BSON::Document.deserialize(data)
        selector == { "ismaster" => 1 }
      end
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.