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

18.0.0.4: WebSphere Application Server Liberty 18.0.0.4
19.0.0.1: WebSphere Application Server Liberty 19.0.0.1
19.0.0.2: WebSphere Application Server Liberty 19.0.0.2
19.0.0.3: WebSphere Application Server Liberty 19.0.0.3
19.0.0.4: WebSphere Application Server Liberty 19.0.0.4
19.0.0.5: WebSphere Application Server Liberty 19.0.0.5
19.0.0.6: WebSphere Application Server Liberty 19.0.0.6
19.0.0.7: WebSphere Application Server Liberty 19.0.0.7
19.0.0.8: WebSphere Application Server Liberty 19.0.0.8
19.0.0.9: WebSphere Application Server Liberty 19.0.0.9
19.0.0.10: WebSphere Application Server Liberty 19.0.0.10
19.0.0.11: WebSphere Application Server Liberty 19.0.0.11
19.0.0.12: WebSphere Application Server Liberty 19.0.0.12
20.0.0.1: WebSphere Application Server Liberty 20.0.0.1
20.0.0.2: WebSphere Application Server Liberty 20.0.0.2
20.0.0.3: WebSphere Application Server Liberty 20.0.0.3
20.0.0.4: WebSphere Application Server Liberty 20.0.0.4
20.0.0.5: WebSphere Application Server Liberty 20.0.0.5

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 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