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PH03004: CWWKS1721E: THE RESOURCE SERVER RECEIVED AN ERROR IT WAS ATTEMPTING TO VALIDATE THE ACCESS TOKEN. Z/OS CONNECT EE

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APAR status

  • Closed as program error.

Error description

  • Customer runs Liberty on z/OS Connect EE doing outbound
    requests to CICS and gets error message:
    
    CWWKS1721E: The resource server received an error while
    it was attempting to validate the access token.
    

Local fix

  • n/a
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  Users of IBM WebSphere Application Server   *
    *                  Liberty and the OpenID Connect client       *
    ****************************************************************
    * PROBLEM DESCRIPTION: OIDC client may send valid access       *
    *                      tokens to userinfo endpoint on OP that  *
    *                      are rejected                            *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When the Liberty OpenID Connect (OIDC) client is configured to
    use a userinfo endpoint as the validationEndpointUrl, a valid
    access token that is sent to the OpenID Connect provider (OP)
    might not be accepted.
    

Problem conclusion

  • When the Liberty OpenID Connect client is configured to use a
    userinfo endpoint as the validationEndpointUrl, the access token
    is being sent as a query parameter on the request URL instead of
    an Authorization header on the HTTP request.
    
    The OIDC client is updated to send the access token in an
    Authorization on the HTTP request instead of a parameter on the
    request sent to the userinfo endpoint on the OP.
    
    The fix for this APAR is currently targeted for inclusion in fix
    pack 18.0.0.4.  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

    PH03004

  • 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

    2018-09-20

  • Closed date

    2018-09-25

  • Last modified date

    2018-09-25

  • 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

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Document Information

Modified date:
08 September 2021