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From "Matt Foley (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-12617) SPNEGO authentication request to non-default realm gets default realm name inserted in target server principal
Date Wed, 09 Dec 2015 01:49:11 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-12617?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matt Foley updated HADOOP-12617:
--------------------------------
    Target Version/s: 2.8.0, 3.0.0  (was: 3.0.0, 2.7.3, 2.9.0)

> SPNEGO authentication request to non-default realm gets default realm name inserted in
target server principal
> --------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-12617
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12617
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: security
>    Affects Versions: 2.7.1
>         Environment: Java client talking to two secure clusters in different Kerberos
realms,
> or talking to any secure cluster in non-default realm
>            Reporter: Matt Foley
>            Assignee: Matt Foley
>         Attachments: HADOOP-12617-branch-2.7.001.patch, HADOOP-12617-branch-2.7.003.patch,
HADOOP-12617.003.patch, HADOOP-12617.005.patch, HADOOP-12617.006.patch, HADOOP-12617.007.patch,
HADOOP-12617.008.patch
>
>
> Note: This is NOT a vulnerability.
> In order for a single Java client to communicate with two different secure clusters in
different realms (only one of which can be the "default_realm"), the client's krb5.conf file
must specify both realms, and provide a \[domain_realm\] section that maps cluster servers'
domains to the correct realms.  With other appropriate behaviors (such as using the config
from each cluster to talk to the respective clusters, and a user principal from each realm
to talk to the respective realms), this is sufficient for most Hadoop ecosystem clients. 

> But our SPNEGO using clients, such as Oozie, have a bug when it comes to talking to a
non-default realm.  The default realm name gets incorrectly inserted into the construction
of the target server principal for the non-default-realm cluster.  Details and proposed solution
are given in the first comments below.



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