PH08466: OAuth introspect endpoint does not return correct issuer if OpenID Connect provider configures issuerIdentifier

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

• The OAuth token introspection endpoint is expected to
  include the issuer of a provided access token in the data
  that it returns. However if an OpenID Connect provider is
  configured to use the OAuth provider that is performing the
  introspection, and that OpenID Connect provider has the
  issuerIdentifier attribute configured, the token
  introspection endpoint does not return the value of the
  issuerIdentifier attribute as the issuer of the token.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server Liberty - OAuth and OpenID Connect   *
  *                  Provider                                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: OAuth introspect endpoint does not      *
  *                      return correct issuer if OpenID Connect *
  *                      provider configures issuerIdentifier    *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The OAuth token introspection endpoint is expected to include
  the issuer of a provided access token in the data that it
  returns. However if an OpenID Connect provider is configured to
  use the OAuth provider that is performing the introspection, and
  that OpenID Connect provider has the issuerIdentifier attribute
  configured, the token introspection endpoint does not return the
  value of the issuerIdentifier attribute as the issuer of the
  token.
  

Problem conclusion

• The OAuth token introspection endpoint is updated to read the
  issuerIdentifier configuration attribute from an associated
  OpenID Connect provider, if one is configured. If a valid
  issuerIdentifier is configured, that value is used for the "iss"
  value that is returned in the token introspection endpoint
  response.
  
  The fix for this APAR is currently targeted for inclusion in fix
  pack 19.0.0.2.  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

  WAS LIBERTY COR

• Fixed component ID

  5725L2900

Applicable component levels

• RCD0 PSY

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