[jira] [Commented] (HIVE-22150) HS2 allows setting system properties

["Hui An (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-22150?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16967301#comment-16967301 ] 

Hui An commented on HIVE-22150:
-------------------------------

[~thejas], [~vaibhgup] May you please review this? Thanks in advance.

> HS2 allows setting system properties
> ------------------------------------
>
>                 Key: HIVE-22150
>                 URL: https://issues.apache.org/jira/browse/HIVE-22150
>             Project: Hive
>          Issue Type: Bug
>          Components: HiveServer2
>    Affects Versions: 4.0.0, 3.1.1
>            Reporter: Craig Condit
>            Assignee: Hui An
>            Priority: Major
>         Attachments: HIVE-22150.patch.1, HIVE-22150.patch.2
>
>
> HiveServer2 currently allows setting system properties, which is a problem when used in a multi-user environment.
> Connecting via beeline and executing the following demonstrates the issue:
> {noformat}
> 0: jdbc:hive2://serv1000.example.com:2181,serv> SET system:java.io.tmpdir;
> +-----------------------------+
> |             set             |
> +-----------------------------+
> | system:java.io.tmpdir=/tmp  |
> +-----------------------------+
> 1 row selected (0.018 seconds)
> 0: jdbc:hive2://serv1000.example.com:2181,serv> SET system:java.io.tmpdir=/tmp/attacker-dir;
> No rows affected (0.013 seconds)
> 0: jdbc:hive2://serv1000.example.com:2181,serv> SET system:java.io.tmpdir;
> +------------------------------------------+
> |                   set                    |
> +------------------------------------------+
> | system:java.io.tmpdir=/tmp/attacker-dir  |
> +------------------------------------------+
> 1 row selected (0.019 seconds)
> {noformat}
> Any changes persist until HS2 is restarted, and affect all connected users. At the very least, this is a denial-of-service vector (verified by setting line.separator to a random string).



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