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From "Erik Krogen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11069) Tighten the authorization of datanode RPC
Date Wed, 30 Aug 2017 17:02:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11069?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16147611#comment-16147611

Erik Krogen commented on HDFS-11069:

Ah, thank you for the context, Kihwal. I am too new for that :)

> 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: 2.8.0, 2.9.0, 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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