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https://issues.apache.org/jira/browse/HBASE-12536?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Purtell updated HBASE-12536:
-----------------------------------
Release Note: This change removes implicit write access to the META and ACL
tables for any user with GLOBAL CREATE or ADMIN privilege. Users with GLOBAL
CREATE will not be able to elevate their privileges unexpectedly through direct
access to the ACL table. A GLOBAL ADMIN will still correctly be allowed to
grant themselves any desired privilege. (was: This change removes implicit
write access to the META and ACL tables for any user with GLOBAL CREATE or
ADMIN privilege. Users with GLOBAL CREATE will not be able to elevate their
privileges unexpectedly through direct access to the ACL table. A GLOBAL ADMIN
will be still correctly be allowed to grant themselves any desired privilege.)
> Reduce the effective scope of GLOBAL CREATE and ADMIN permission
> ----------------------------------------------------------------
>
> Key: HBASE-12536
> URL: https://issues.apache.org/jira/browse/HBASE-12536
> Project: HBase
> Issue Type: Bug
> Components: security
> Reporter: Andrew Purtell
> Assignee: Andrew Purtell
> Fix For: 2.0.0, 0.94.24, 0.98.8, 0.99.2
>
> Attachments: HBASE-12536-0.94.patch, HBASE-12536-0.98.patch,
> HBASE-12536.patch
>
>
> The current implementation of the AccessController grants users with *GLOBAL*
> CREATE or ADMIN privilege implicit write access to the META and ACL tables,
> so when a new table is created new entries can be added to META and ACL
> appropriately in the pre and post handlers with the credentials supplied in
> the RPC context. Although any user with GLOBAL CREATE or ADMIN is already
> superuser-like in many respects, the implicit write privilege is an artifact
> of implementation that should be changed. We can remove the implicit write
> access. After doing so, users with GLOBAL CREATE will not be able to elevate
> their privileges unexpectedly through direct access to the ACL table. A
> GLOBAL ADMIN will be still correctly be allowed to grant themselves any
> desired privilege.
> This issue was discovered and raised by [~devaraj] on private@hbase as a
> potential security issue and was included in the 0.94.24 and 0.98.8 releases
> prior to the filing of this JIRA.
> I've set the priority of this issue only at 'Major' since it only affects
> users with GLOBAL CREATE or ADMIN privilege. GLOBAL ADMIN is already a
> superuser, and GLOBAL CREATE likewise should already also be considered
> superuser-lite access and sparingly granted to trusted personnel.
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