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From Jiri Daněk (Jira) <j...@apache.org>
Subject [jira] [Resolved] (PROTON-2124) Disable GS2-KRB5 and GS2-IAKERB SASL mechanisms if they are not explicitly enabled
Date Thu, 24 Oct 2019 22:58:00 GMT

     [ https://issues.apache.org/jira/browse/PROTON-2124?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jiri Daněk resolved PROTON-2124.
--------------------------------
    Resolution: Fixed

> Disable GS2-KRB5 and GS2-IAKERB SASL mechanisms if they are not explicitly enabled
> ----------------------------------------------------------------------------------
>
>                 Key: PROTON-2124
>                 URL: https://issues.apache.org/jira/browse/PROTON-2124
>             Project: Qpid Proton
>          Issue Type: Improvement
>          Components: proton-c
>            Reporter: Jiri Daněk
>            Assignee: Jiri Daněk
>            Priority: Major
>              Labels: release-notes, sasl, usability
>             Fix For: proton-c-0.30.0
>
>
> I've noticed two additional kerberos sasl mechanisms that aren't blacklisted
> bq. [0xb80670]:0 <- @sasl-mechanisms(64) [sasl-server-mechanisms=@PN_SYMBOL[:"GS2-IAKERB",
:"GS2-KRB5", :"SCRAM-SHA-1", :"SCRAM-SHA-256", :GSSAPI, :"GSS-SPNEGO", :"DIGEST-MD5", :OTP,
:"CRAM-MD5", :ANONYMOUS]]
> They are GS2-IAKERB and GS2-KRB5. The GS2-KRB5 is the problematic one, allowing GS2-IAKERB
does not stop proton from trying ANONYMOUS eventually.
> When GS2-KRB5 is enabled, I get this failure instead (in ctest tests, test 23, or when
connecting {{sender}} example to {{broker}} example)
> bq. 23: amqp:unauthorized-access: SASL(-1): generic failure: GS2 Error: Unspecified GSS
failure.  Minor code may provide more information (Ticket expired) (Authentication failed
[mech=none])
> I think those must be new. They appear on macOS, or if I install all cyrus-sasl packages
on RHEL 7.7 or RHEL 8.1.



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