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From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11069) Tighten the authorization of datanode RPC
Date Thu, 27 Oct 2016 19:24:58 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11069?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15612896#comment-15612896
] 

Kihwal Lee commented on HDFS-11069:
-----------------------------------

Committed to trunk, branch-2, branch-2.8 and branch-2.7.

> Tighten the authorization of datanode RPC
> -----------------------------------------
>
>                 Key: HDFS-11069
>                 URL: https://issues.apache.org/jira/browse/HDFS-11069
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode, security
>            Reporter: Kihwal Lee
>            Assignee: Kihwal Lee
>             Fix For: 2.7.4, 3.0.0-alpha2
>
>         Attachments: HDFS-11069.patch
>
>
> The current implementation of {{checkSuperuserPrivilege()}} allows the datanode user
from any node to be recognized as a super user.  If one datanode is compromised, the intruder
can issue {{shutdownDatanode()}}, {{evictWriters()}}, {{triggerBlockReport()}}, etc. against
all other datanodes. Although this does not expose stored data, it can cause service disruptions.
> This needs to be tightened to allow only the local datanode user.



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