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https://issues.apache.org/jira/browse/AMBARI-18632?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Weiwei Yang resolved AMBARI-18632.
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Resolution: Later
> Security flaw with adding dr.who into yarn.admin.acl while enabling kerberos
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>
> Key: AMBARI-18632
> URL: https://issues.apache.org/jira/browse/AMBARI-18632
> Project: Ambari
> Issue Type: Bug
> Components: security
> Affects Versions: 2.3.0, 2.2.0, 2.4.0
> Reporter: Weiwei Yang
> Priority: Major
>
> AMBARI-12415 introduces a major security hole to a secure cluster, it adds
> *dr.who* into *yarn.admin.acl*, which grants yarn admin permission to an
> anonymous user. It should be reverted.
> There is an alternative way of fixing this, see more in HADOOP-13707. Http
> service could be non-secure in a kerberized environment, when
> hadoop.http.authentication.type=simple, under this situation, the fix of
> HADOOP-13707 skips admin checks for static user dr.who.
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