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AUSCERT External Security Bulletin Redistribution
ESB-2017.2777
CVE-2017-12625: Apache Hive information disclosure
vulnerability for column masking
2 November 2017
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AusCERT Security Bulletin Summary
---------------------------------
Product: Apache Hive
Publisher: The Apache Software Foundation
Operating System: UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2017-12625
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CVE-2017-12625: Apache Hive information disclosure vulnerability for column
masking
Severity: Important
Vendor: The Apache Software Foundation
Versions Affected: Hive 2.1.0 to 2.3.0
Description:
Hive exposes an interface through which masking policies can be defined on
tables or views, e.g., using Apache Ranger. When a view is created over a
given table, the policy enforcement does not happen correctly on the table for
masked columns.
Mitigation:
2.3.0 users should upgrade to 2.3.1
2.2.0 users should upgrade to 2.3.1, obtain the latest source from git for
branch-2.2
or apply this patch which will be included from 2.2.1
https://git1-us-west.apache.org/repos/asf?p=3Dhive.git;a=3Dcommit;h=3D0e795debddf261b0ac6ace90e2d774f9a99b7f4b
2.1.x users should upgrade to 2.3.1, obtain the latest source from git for
branch-2.1
or apply this patch which will be included from 2.1.2
https://git1-us-west.apache.org/repos/asf?p=3Dhive.git;a=3Dcommit;h=3D6db9fd6e43f6eef3c9d1ca8e324b2edaa54fb0d3
To mitigate this vulnerability until Hive is upgraded to a new version, there
are two possible options. These steps need to be done manually in Ranger /
Hive.
1) Restrict users from creating views on tables with column masking rules
defined. For
this in Ranger Hive Policy:
- Users should not have SELECT permission for those Table columns with
masking rules defined.
- Give SELECT permission only for those columns without masking rules
defined.
2) Review the Hive Column Masking Policies maintained in Ranger for the
tables. Then check in Hive if views that read those tables have been defined.
If present, either change the view definition so those columns are not
selected or directly drop those views.
Credit: This issue was reported by Suja Santhosh of Hortonworks.
If you have any question, please reach out to us in the Hive dev list.
Regards,
The Apache Hive Team
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