PI75095: OIDC ClassCastException java.util.ArrayList

Fixes are available

APAR status

Closed as program error.

Error description

The WebSphere Application Server OpenId Connect Relying Party
expects multi-valued group attributes, but in certain cases
the OP can send a single-valued group attribute.

Local fix

Configure the OP to send a multi-valued group attribute

Problem summary

****************************************************************
* USERS AFFECTED:  IBM WebSphere Application Server users of   *
*                  OpenID Connect (OIDC)                       *
****************************************************************
* PROBLEM DESCRIPTION: OIDC ClassCastException                 *
*                      java.util.ArrayList                     *
****************************************************************
* RECOMMENDATION:  Install a fix pack that contains this       *
*                  APAR.                                       *
****************************************************************
The OpenID Connect Trust Association Interceptor may return a
403 to a client request, leaving the following FFDC:
[1/25/17 15:47:36:764 MST] 000000de FfdcProvider  W
com.ibm.ws.ffdc.impl.FfdcProvider logIncident FFDC1003I: FFDC
Incident emitted on
/usr/WebSphere/AppServer/profiles/AppSrvr/logs/ffdc/server1_4cb7
d750_17.01.25_15.47.36.7608905319016880026677.txt
com.ibm.ws.security.web.WebAuthenticator.handleTrustAssociation
590
[1/25/17 15:47:36:765 MST] 000000de WebAuthentica ESECJ0128E:
An unexpected exception occurred during Trust Association. The
exception is java.lang.ClassCastException: java.lang.String
incompatible with java.util.ArrayList
at
com.ibm.ws.security.oidc.client.SessionData.getGroupIds(SessionD
ata.java:407)
at
com.ibm.ws.security.oidc.client.SessionData.getJaasSubject(Sessi
onData.java:565)
at
com.ibm.ws.security.oidc.client.RelyingParty.AuthenticateUsingSe
ssionCookie(RelyingParty.java:612)
at
...

Problem conclusion

If a JSON Web Token (JWT) has a group with only one member,
the group query will return a String instead of an ArrayList.
The OIDC code is expecting an ArrayList, thus the
ClassCastException.

The OIDC runtime is updated to allow a String or ArrayList
return from the group query of a JWT.

The fix for this APAR is currently targeted for inclusion in
fix pack 8.0.0.14, 8.5.5.12 and 9.0.0.4.  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
PI75095
Reported component name
WEBSPHERE APP S
Reported component ID
5724J0800
Reported release
850
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2017-01-17
Closed date
2017-03-07
Last modified date
2017-03-07

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
WEBSPHERE APP S
Fixed component ID
5724J0800

Applicable component levels

R800 PSY
UP
R850 PSY
UP
R900 PSY
UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.5","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
04 May 2022

Tips

PI75095: OIDC ClassCastException java.util.ArrayList

Fixes are available

Subscribe

APAR status

Closed as program error.

Error description

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

APAR number

Reported component name

Reported component ID

Reported release

Status

PE

HIPER

Special Attention

Submitted date

Closed date

Last modified date

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

Fixed component ID

Applicable component levels

R800 PSY

R850 PSY

R900 PSY

Document Information

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