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https://issues.apache.org/jira/browse/KAFKA-3396?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15287873#comment-15287873
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Edoardo Comar commented on KAFKA-3396:
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Hi [~granthenke] we're still working on it,
we're working to get the unit tests pass (and added a few others) .
We had some surprises running `SaslSslEndToEndAuthorizationTest`
if we change the consumers from
```consumers.head.assign(List(tp).asJava)```
to
```consumers.head.subscribe(List(topic).asJava) ```
the code paths are different and even the original tests may not pass unless we
change
``` this.serverConfig.setProperty(KafkaConfig.MinInSyncReplicasProp, "1")```
to be a `"1"`
which is the case also for the original code. Not sure if we're missing
something.
> 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.
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