Weiwei Yang created AMBARI-18632:

             Summary: Security flaw with adding dr.who into yarn.admin.acl  
while enabling kerberos
                 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

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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