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Posted to common-issues@hadoop.apache.org by "Jitendra Nath Pandey (Jira)" <ji...@apache.org> on 2020/07/15 20:47:00 UTC
[jira] [Commented] (HADOOP-15518) Authentication filter calling
handler after request already authenticated
[ https://issues.apache.org/jira/browse/HADOOP-15518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17158702#comment-17158702 ]
Jitendra Nath Pandey commented on HADOOP-15518:
-----------------------------------------------
[~kminder], [~eyang], is this patch still valid?
cc [~xyao]
> Authentication filter calling handler after request already authenticated
> -------------------------------------------------------------------------
>
> Key: HADOOP-15518
> URL: https://issues.apache.org/jira/browse/HADOOP-15518
> Project: Hadoop Common
> Issue Type: Bug
> Components: security
> Affects Versions: 2.7.1
> Reporter: Kevin Minder
> Assignee: Kevin Minder
> Priority: Major
> Attachments: HADOOP-15518-001.patch
>
>
> The hadoop-auth AuthenticationFilter will invoke its handler even if a prior successful authentication has occurred in the current request. This primarily affects situations where multiple authentication mechanism has been configured. For example when core-site.xml's has hadoop.http.authentication.type=kerberos and yarn-site.xml has yarn.timeline-service.http-authentication.type=kerberos the result is an attempt to perform two Kerberos authentications for the same request. This in turn results in Kerberos triggering a replay attack detection. The javadocs for AuthenticationHandler ([https://github.com/apache/hadoop/blob/trunk/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/server/AuthenticationHandler.java)] indicate for the authenticate method that
> {quote}This method is invoked by the AuthenticationFilter only if the HTTP client request is not yet authenticated.
> {quote}
> This does not appear to be the case in practice.
> I've create a patch and tested on a limited number of functional use cases (e.g. the timeline-service issue noted above). If there is general agreement that the change is valid I'll add unit tests to the patch.
>
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