IBM Support

PI85910: X5C TAG IS NOT HANDLED

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APAR status

  • Closed as program error.

Error description

  • The WebSphere Liberty openidConnectClient (server.xml) has
    been
    configured to use Azure as the IDP. The IDP's keys can be
    located but cannot be retrieved by WebSphere because the x5c
    tag isn't handled.
    

Local fix

  • Hardcode the keys
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  Users of IBM WebSphere Application Server   *
    *                  Liberty - OpenID Connect Relying Party      *
    ****************************************************************
    * PROBLEM DESCRIPTION: OIDC does not recognize x5c tag in JWK  *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When the OpenID Connect Relying Party attempts to retrieve a key
    from the JWK endpoint, the following error may occur:
    
    CWWKS1739E: A signing key required by signature algorithm
    [RS256] was not available
    

Problem conclusion

  • The Liberty OIDC RP is updated to not stop processing the JWK if
    it encounters an x5c tag.
    
    The fix for this APAR is currently targeted for inclusion in fix
    pack 17.0.0.3.  Please refer to the Recommended Updates page for
    delivery information:
    http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI85910

  • Reported component name

    LIBERTY PROFILE

  • Reported component ID

    5724J0814

  • Reported release

    CD0

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-08-15

  • Closed date

    2017-10-05

  • Last modified date

    2017-10-05

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    LIBERTY PROFILE

  • Fixed component ID

    5724J0814

Applicable component levels

  • RCD0 PSY

       UP



Document information

More support for: WebSphere Application Server

Software version: CD0

Reference #: PI85910

Modified date: 05 October 2017


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