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From "Daryn Sharp (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-14146) KerberosAuthenticationHandler should authenticate with SPN in AP-REQ
Date Mon, 27 Mar 2017 19:40:42 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14146?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15943916#comment-15943916
] 

Daryn Sharp commented on HADOOP-14146:
--------------------------------------

bq. One question, maybe we could avoid maintaining the DER parser codes like follows by leveraging
the ASN1 and Kerberos library in Apache Kerby? 

I had quickly looked at Kerby and Apache DS.  I didn't use them for a few reasons:  The extra
dependency burden.  Relatively heavy weight to partially decode the ticket - we need just
a tiny portion of it.  The encoding format is decades old so there shouldn't be a maintainability
issue.

Thoughts?

> KerberosAuthenticationHandler should authenticate with SPN in AP-REQ
> --------------------------------------------------------------------
>
>                 Key: HADOOP-14146
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14146
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: security
>    Affects Versions: 2.5.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>         Attachments: HADOOP-14146.1.patch, HADOOP-14146.patch
>
>
> Many attempts (HADOOP-10158, HADOOP-11628, HADOOP-13565) have tried to add multiple SPN
host and/or realm support to spnego authentication.  The basic problem is the server tries
to guess and/or brute force what SPN the client used.  The server should just decode the SPN
from the AP-REQ.



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