PI34088: ERROR IN SAML WEB SSO TAI WITH CUSTOM SP-INITIATED SSO

Fixes are available

APAR status

Closed as program error.

Error description

With the SAML Web SSO TAI, when custom code is used to
simulate SP-initiated SSO, the TAI will fail to validate the
SAMLResponse with the following error:

CWWSS8006E: InResponseTo must not be present for IdP-Initiated
unsolicited responses.

Local fix

```
N/A
```

Problem summary

****************************************************************
* USERS AFFECTED:  IBM WebSphere Application Server users of   *
*                  SAML web single sign-on (SSO)               *
****************************************************************
* PROBLEM DESCRIPTION: An error occurs in the SAML Web SSO     *
*                      TAI with custom SP-initiated SSO        *
****************************************************************
* RECOMMENDATION:  Install a fix pack that includes this       *
*                  APAR.                                       *
****************************************************************
The SAML web single sign-on (SSO) Trust Association
Interceptor (TAI) supports identity provider (IdP)-initiated
SSO only.  If a service provider (SP) attempts to
do SP-initiated SSO by including a SAMLRequest in the request
to the IdP, the SP cannot process the SAMLResponse and will
emit the following error:
CWWSS8006E: InResponseTo must not be present for IdP-Initiated
unsolicited responses.

Problem conclusion

The SAML TAI is updated to provide an option to include a
SAMLRequest in the request to the IdP by using a plug point,
and process solicited SAMLResponses corresponding to the
SAMLRequest. To use this feature, set the following custom
property to your custom class that implements the
com.ibm.wsspi.security.web.saml.AuthnRequestProvider SPI:

sso_<id>.sp.login.error.page


Following is the interface for
com.ibm.wsspi.security.web.saml.AuthnRequestProvider:

public interface AuthnRequestProvider extends
IdentityProviderMapping {
  public static final String AUTHN_REQUEST="authnRequest";
  public static final String REQUEST_ID = "requestId";
  public static final String RELAY_STATE="relayState";
  public static final String SSO_URL="ssoUrl";

  /**
   * Maps a HttpServletRequest to a valid URL.
   * This is used to map the HttpServletRequest to a valid URL,
   * so that WebSphere can redirect user to the URL for
   * re-login or receiving error message
   *
   * @para    req the HttpServletRequest
   * @param   errorMsg the String
   * @param   acsUrl the String of AssertionConsumerService URL
   * @param   ssoUrl the ArrayList of Single-SignOn service URLs
   * @return  the URL String of the user which should be
   *          redirected to
   * @exception NotImplementedException if this implementation
   *            is not supported.
   **/
   public HashMap <String, String> getAuthnRequest(
                  HttpServletRequest req,
                  String errorMsg,
                  String acsUrl,
                  ArrayList<String> ssoUrls)
                  throws NotImplementedException;
}

The fix for this APAR is currently targeted for inclusion in
fix pack 7.0.0.39, 8.0.0.11 and 8.5.5.7.  Please refer to the
Recommended Updates page for delivery information:
http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980

Keywords: IBMWL3WSS, SAMLWSSO, FIXEDBYPI47842

Temporary fix

Comments

APAR Information

APAR number
PI34088
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2015-02-03
Closed date
2015-04-28
Last modified date
2015-11-18

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
WEBS APP SERV N
Fixed component ID
5724H8800

Applicable component levels

R700 PSY
UP
R800 PSY
UP
R850 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":"7.0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
28 April 2022

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PI34088: ERROR IN SAML WEB SSO TAI WITH CUSTOM SP-INITIATED SSO

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

R700 PSY

R800 PSY

R850 PSY

Document Information

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