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https://issues.apache.org/jira/browse/DIRKRB-614?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15701485#comment-15701485
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Kai Zheng commented on DIRKRB-614:
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If the PADATA is unexpectedly there then the sad thing is it's hard for Kerby
to ignore it, as Kerby strictly follows the asn.1 definition in its common
asn.1 underlying framework. Before to have a fix, maybe you could work around
this by disabling the preauth check?
> Kerby (simplekdc) fails to handle unknown PADATA
> -------------------------------------------------
>
> Key: DIRKRB-614
> URL: https://issues.apache.org/jira/browse/DIRKRB-614
> Project: Directory Kerberos
> Issue Type: Bug
> Affects Versions: 1.0.0-RC2
> Environment: SimpleKDC
> Reporter: Bolke de Bruin
> Attachments: kerb.pcap, kerb_heimdal.pcapng
>
>
> I am using simplekdc wrapped in an application to allow CI for Apache Airflow.
> While testing I found out that on my development system (OS X - Heimdal with
> MIT Shim) everything worked fine, but when moving over to the CI (MIT) system
> it stopped working with the following error.
> {code}
> 2016-11-26 17:08:51,974 ERROR [pool-1-thread-3] impl.DefaultKdcHandler: Error
> occured while processing request:
> org.apache.kerby.kerberos.kerb.KrbException: Decoding failed
> at org.apache.kerby.kerberos.kerb.KrbCodec.decode(KrbCodec.java:85)
> at org.apache.kerby.kerberos.kerb.KrbCodec.decode(KrbCodec.java:70)
> at
> org.apache.kerby.kerberos.kerb.server.request.KdcRequest.kdcFindFast(KdcRequest.java:208)
> at
> org.apache.kerby.kerberos.kerb.server.request.KdcRequest.process(KdcRequest.java:168)
> at
> org.apache.kerby.kerberos.kerb.server.KdcHandler.handleMessage(KdcHandler.java:115)
> at
> org.apache.kerby.kerberos.kerb.server.impl.DefaultKdcHandler.handleMessage(DefaultKdcHandler.java:67)
> at
> org.apache.kerby.kerberos.kerb.server.impl.DefaultKdcHandler.run(DefaultKdcHandler.java:52)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.io.IOException: Unexpected item context [0] [tag=0xA0, off=0,
> len=3+198], expecting 0x30
> at
> org.apache.kerby.asn1.type.Asn1Encodeable.decode(Asn1Encodeable.java:210)
> at
> org.apache.kerby.asn1.type.Asn1Encodeable.decode(Asn1Encodeable.java:197)
> at org.apache.kerby.kerberos.kerb.KrbCodec.decode(KrbCodec.java:83)
> ... 9 more
> {code}
> Digging in with Wireshark showed that the MIT libraries are sending extra
> PAData which makes Kerby not respond (Wireshark records this as "Unknown
> 136"). This behavior can be replicated by using "kvno".
> Heimdal on OSX does not send this and gets a response.
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