[
https://issues.apache.org/jira/browse/HADOOP-13119?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15829038#comment-15829038
]
Allen Wittenauer commented on HADOOP-13119:
-------------------------------------------
I did a quick read through the JIRA, so I apologize if I've missed something.
But I think there has been a big misunderstanding from the original design
intent in this JIRA:
bq. Would expect as a user to be able to web interface logs link.
>From what I remember, there are certain sets of links that were designed not
>to be open to end users in any way, shape, or form because they have a
>tendency to leak sensitive information in "real world" use cases. /logs, for
>example, exposes file and directory names, amongst other info.
The dfs.cluster.administrators setting was intended to give access to those
"admin-only" links. (This clearly predates YARN.) The users in this group
should almost certainly not be proxiable accounts, as it opens up a whole new
can of security worms with regards to secondary systems; does your workflow
scheduler allow anyone to run as any other user?
That said, I could see under extremely limited circumstances why proxying might
be necessary. This falls under "enough rope to hang yourself"--it's a bad
idea, but sometimes you have no choice. As long as one is careful, it might
work out ok.
> Web UI error accessing links which need authorization when Kerberos
> -------------------------------------------------------------------
>
> Key: HADOOP-13119
> URL: https://issues.apache.org/jira/browse/HADOOP-13119
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 2.8.0, 2.7.4
> Reporter: Jeffrey E Rodriguez
> Assignee: Yuanbo Liu
> Labels: security
> Attachments: HADOOP-13119.001.patch, HADOOP-13119.002.patch,
> HADOOP-13119.003.patch, HADOOP-13119.004.patch, HADOOP-13119.005.patch,
> screenshot-1.png
>
>
> User Hadoop on secure mode.
> login as kdc user, kinit.
> start firefox and enable Kerberos
> access http://localhost:50070/logs/
> Get 403 authorization errors.
> only hdfs user could access logs.
> Would expect as a user to be able to web interface logs link.
> Same results if using curl:
> curl -v --negotiate -u tester: http://localhost:50070/logs/
> HTTP/1.1 403 User tester is unauthorized to access this page.
> so:
> 1. either don't show links if hdfs user is able to access.
> 2. provide mechanism to add users to web application realm.
> 3. note that we are pass authentication so the issue is authorization to
> /logs/
> suspect that /logs/ path is secure in webdescriptor so suspect users by
> default don't have access to secure paths.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
