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https://issues.apache.org/jira/browse/KAFKA-2579?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14907308#comment-14907308
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ASF GitHub Bot commented on KAFKA-2579:
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GitHub user hachikuji opened a pull request:
https://github.com/apache/kafka/pull/240
KAFKA-2579; prevent unauthorized clients from joining groups
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/hachikuji/kafka KAFKA-2579
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/240.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #240
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commit c2700d06c0e73a0259c254bd1b776c271c86c79e
Author: Jason Gustafson <ja...@confluent.io>
Date: 2015-09-25T00:33:26Z
KAFKA-2579; prevent unauthorized clients from joining groups
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> Unauthorized clients should not be able to join groups
> -------------------------------------------------------
>
> Key: KAFKA-2579
> URL: https://issues.apache.org/jira/browse/KAFKA-2579
> Project: Kafka
> Issue Type: Sub-task
> Components: security
> Affects Versions: 0.9.0.0
> Reporter: Jason Gustafson
> Assignee: Jason Gustafson
>
> The JoinGroup authorization is only checked in the response callback which is
> invoked after the request has been forwarded to the ConsumerCoordinator and
> the client has joined the group. This allows unauthorized members to impact
> the rest of the group since the coordinator will assign partitions to them.
> It would be better to check permission and return immediately if the client
> is unauthorized.
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