[jira] [Created] (KAFKA-3396) Unauthorized topics are returned to the user

["Grant Henke (JIRA)" <ji...@apache.org>]

Grant Henke created KAFKA-3396:
----------------------------------

             Summary: Unauthorized topics are returned to the user
                 Key: KAFKA-3396
                 URL: https://issues.apache.org/jira/browse/KAFKA-3396
             Project: Kafka
          Issue Type: Bug
            Reporter: Grant Henke


Kafka's clients and protocol exposes unauthorized topics to the end user. This is often considered a security hole. To some, the topic name is considered sensitive information. Those that do not consider the name sensitive, still consider it more information that allows a user to try and circumvent security.  Instead, if a user does not have access to the topic, the servers should act as if the topic does not exist. 

To solve this some of the changes could include:
      - The broker should not return a TOPIC_AUTHORIZATION(29) error for requests (metadata, produce, fetch, etc) that include a topic that the user does not have DESCRIBE access to.
      - A user should not receive a TopicAuthorizationException when they do not have DESCRIBE access to a topic or the cluster.
     - The client should not maintain and expose a list of unauthorized topics in org.apache.kafka.common.Cluster. 

Other changes may be required that are not listed here. Further analysis is needed. 



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)