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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11434) [AccessController] Disallow inbound cells with reserved tags
Date Wed, 02 Jul 2014 23:36:24 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11434?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14050869#comment-14050869

Andrew Purtell commented on HBASE-11434:

Looks like this is good to go, committing soon.

> [AccessController] Disallow inbound cells with reserved tags
> ------------------------------------------------------------
>                 Key: HBASE-11434
>                 URL: https://issues.apache.org/jira/browse/HBASE-11434
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>             Fix For: 0.99.0, 0.98.4
>         Attachments: HBASE-11434.patch, HBASE-11434.patch, HBASE-11434.patch, HBASE-11434.patch
> The AccessController allows users to store cells with ACL tags encoded by the client.
This isn't a security issue currently, because in order to store the cell the user must have
a relevant WRITE grant, and the user is allowed to specify whatever ACL for the cell they'd
like. However it could become a correctness problem in the future, if we introduce format
sanity checking or the like, so let's disallow inbound mutations containing cells with reserved
tags like the VisibilityController does. 
> The check is skipped if the active user is a superuser. First, superusers are allowed
to do anything. Second, replication (as superuser) must be able to store incoming cells with
ACL tags. 

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