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From "Alejandro Abdelnur (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8518) SPNEGO client side should use KerberosName rules
Date Wed, 27 Jun 2012 18:12:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13402427#comment-13402427
] 

Alejandro Abdelnur commented on HADOOP-8518:
--------------------------------------------

@Daryn, regarding the server sending the hostname in a header, that is not part of the SPNEGO
protocol. And it could be a security vulnerability, it would enable a MiM attack. Plus, the
client has to dictate what is the server principal as we are enforcing dual authentication.
                
> SPNEGO client side should use KerberosName rules
> ------------------------------------------------
>
>                 Key: HADOOP-8518
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8518
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>    Affects Versions: 1.0.3, 2.0.0-alpha
>            Reporter: Alejandro Abdelnur
>            Assignee: Alejandro Abdelnur
>             Fix For: 1.1.0, 2.0.1-alpha
>
>
> currently KerberosName is used only on the server side to resolve the client name, we
should use it on the client side as well to resolve the server name before getting the kerberos
ticket.

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