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From "Robert Levas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-18836) Remove group readable from hdfs headless keytab
Date Mon, 28 Nov 2016 17:41:59 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-18836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15702608#comment-15702608
] 

Robert Levas commented on AMBARI-18836:
---------------------------------------

[~Wancy]..

I commit the update to the trunk:

{noformat}
commit cad0130d9d4a64a6bda1992758c5c7c05e06b39e
Author: Shi Wang <cntjuws@gmail.com>
Date:   Mon Nov 28 12:39:05 2016 -0500
{noformat}


> Remove group readable from hdfs headless keytab
> -----------------------------------------------
>
>                 Key: AMBARI-18836
>                 URL: https://issues.apache.org/jira/browse/AMBARI-18836
>             Project: Ambari
>          Issue Type: Bug
>    Affects Versions: trunk
>            Reporter: Shi Wang
>            Assignee: Shi Wang
>             Fix For: trunk
>
>         Attachments: 0001-AMBARI-18836-Remove-group-readable-from-hdfs-headles.patch,
AMBARI-18836-test_failure.patch
>
>
> The Smoke and “Headless” Service users are used by Ambari to perform service “smoke”
checks and run alert health checks. 
> The permission for hdfs.headless.keytab is 440. But it will cause security concern to
allow other service user in hadoop group to kinit hdfs headless principal using hdfs.headless.keytab.
In this way, other service user could "pretend" to be hdfs user and be granted hdfs user's
authorities.



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