I am testing SAML SSO using WSO2 Identity Server 5.0.0 with two PHP application instances as service providers (using onelogin phpsaml). I managed to make the single sign on to work but now I'm facing a problem with single logout.
When I trigger a logout request from the PHPApp1, WSO2 IDP responds
with a logout response and it seems to works fine;
WSO2 IDP triggers a logout request to the saml session particants, in this case to the PHPApp2;
The PHPApp2 handles the logout request and redirect to the WSO2 IDP logout url with the LogoutResponse;
And now the issue: WSO2 does not seems to handle the logout response from PHPApp2 and prints in logs the following message:
WARN {org.wso2.carbon.identity.sso.saml.logout.LogoutRequestSender} - Failed single logout response from http://php-app2.dev/saml/sls with status code Moved Temporarily {org.wso2.carbon.identity.sso.saml.logout.LogoutRequestSender}
After that WSO2 keeps trying sending logout requests to the PHPApp2 and ends up with the following message:
ERROR {org.wso2.carbon.identity.sso.saml.logout.LogoutRequestSender} - Single logout failed after retrying 5 times with time interval 60000 in milli seconds. {org.wso2.carbon.identity.sso.saml.logout.LogoutRequestSender}
I tried to enable debug logs in WSO2 to obtain more detailed information about the issue but I am not able to get any helpful information.
Is there any way to get more detailed information about this issue?
Any help is welcomed.
Michael, In the SAML Single Logout implementation, when the PHPApp1 initiates the logout, it redirects the user to WSO2 IDP. Then WSO2 IDP validates the LogoutRequest message, after successful validation, WSO2 IDP figure-out the existing session participants (in this case WSO2 IDP will detect PHPApp2). So after session participants are figured, the WSO2 IDP will send Logout Requests to those in stateless way (no browser involvement) and the session participants (PHPApp2) should validate the Logout Requests from the WSO2 IDP and should send the Logout Response back (no browser involvement, no redirections) to the WSO2 IDP. After WSO2 IDP receives all the LogoutResponses back from the all session participants, WSO2 IDP contract it's Logout Response to the initiator which is PHPApp1, this will be sent as a browser redirection (HTTP Form submission).
Well, the problem is due to the fact that onelogin/php-saml implementation handles the IDP Logout request by redirecting the response to the IDP.
I change the code to returns the response instead and it is working now. Considering that I am new to the SAML standards, I am not sure if it is the correct way to solve that.
WSO2 IS works with strong assumptions that servers could see and talk to each other. This way it tries to be polite and sends the logout requests on back channel (server-to-server without user involvement). As the response the SP should send back a valid logout response. The WSO2 IS currently checks only the HTTP status code (200).
SimpleSAMLphp works with user browsers (and assuming the requests are coming from the user) and after receiving the logout request it tries to redirect the user back to IDP with the SAML Response using Redirect-binding. It's issuing HTTP 302 response.
Try to configure the SimpleSAMLphp to use POST binding for logout (in saml20-idp-remote.php). Still - SimpleSAMLphp it may try to redirect the user before returning the form with logout response and WSO2 IS will not follow the redirects.
Gabriel
Make sure you are using a database type session store.
SimpleSAMLphp can then kill the session without the browser context when it receives the LogoutRequest from the remote server directly rather than through a browser redirect.
Related
I have next components:
RP-1 (connected by Ws-Fed, WIF)
RP-2 (connected by SAML, Federation Provider, actially it is another ADFS)
MY-ADFS (ADFS Server 2019 as primary STS)
MY-IP (separate Identity Provider web service, Identity Server 4)
Thus, when I make a sing-out request from RP-1(Ws-Fed), a simple Ws-Fed Logout is formed a request to ADFS:
GET https:/MY-ADFS/adfs/ls/
wtrealm: https://RP-1.com/
wa: wsignout1.0
wreply: https://RP-1.com/logout/
Next ADFS makes redirect to IP:
GET https://MY-IP/WsFederation
wa: wsignout1.0
wreply: https://MY-ADFS/adfs/ls/?redirectContextId=2dd581d2-6e02-4476-915b-a581e3c855d4
thus the user clears the session from ADFS and from IP. - as expected.
However, if before the logout, the transition to SAML RP was made and the SAML session became active, then upon exiting ADFS gives an error:
MSIS7055: Not all SAML session participants logged out properly. It is
recommended to close your browser.
To fix it, I configured the logout endpoint (URL) in the SAML relying party trust as:
https:/RP-2/adfs/ls/?wa=wsignout1.0
With POST binding. After these changes, the error disappeared. But now ADFS no longer does make Logout redirec to to IP, but instead it does a SAML Logout redirect to RP-2:
POST https://RP-2/adfs/ls/?wa=wsignout1.0
SAMLRequest: PHNhbWxwOkxvZ291dFJl
And as a result, Instead of switching to IP, I remain on the RP-2(ADFS also) page where it is written that the exit was successful. However, the user still has an active session (cookies) on the IP side.
Several questions here:
It is not clear why ADFS changes the chain of calls with the SAML active session.
It is not clear how to exclude SAML Logout redirects, or force ADFS to make Logout to IP also.
You will have to add the logout URL in the IP (Identity provider) side as well to ensure that the SAML token generated by signing out from the SaaS application through ADFS is forwarded to the Identity provider and is updated for logout at IP authorization provider end. So that, the cookie on the browser will be updated and sign out will be processed smoothly.
Please find the below probable steps to update the logout URL at the Identity Provider end: -
Open the authentication provider workspace.
Find the logout URL.
Update the URL to the ‘https://RP-2/adfs/ls/?wa=wsignout1.0’ same as that configured in ADFS Server.
Save your changes.
And as for your first query why ADFS changes the chain of calls with SAML active session, it is because the cookies and cache must be removed from the system for successful logout request, thus the logout time as recorded when signing out is updated at the SaaS app end and thus, it is recommended to close the browser let it update in the system also.
Thus, recommend you open both the RP trust apps in different browser windows as both are configured for different token providers.
Please refer the below thread for more information: -
How do you handle the logout process for applications federated with ADFS?
Thanking you,
I have one SP and one IDP using Keycloak.
I'm using SAML protocol and I can successfully login and logout when the request is initiated by the SP.
But when connected as an admin in Keycloak I logout an user from his session no request are sent to the SP.
The session is indeed terminated on the IDP side but not on the SP side.
Because of that the user on the SP can still use the application.
I can't see any option in client configuration for that.
Has anyone made IDP initiated log out in SAML works with keycloak ?
Could you give me some directions ?
Thank you for your time.
After some other research this is not a feature of Keycloak.
https://www.keycloak.org/docs/2.5/server_admin/topics/sessions/administering.html
Quoting the docs
Only certain clients are notified of this logout event, specifically clients that are using the Keycloak OIDC client adapter. Other client types (i.e. SAML) will not receive a backchannel logout request.
I had the same issues using keycloak saml broker. It turned out that enabling back-channel logout (disabling front-channel logout) in keycloak client configuration solved my problem.
I am using 4.8.0.Final
I'm implementing an SSO authentication flow using SAML for a web server running tomcat. Everything is working ok when using POST or Redirect bindings, but from what I've read to support the SAML authentication in front of a REST API I need to also configure and use an ECP profile.
First correct me if I'm wrong but the ECP flow should be like this:
Client accesses the SP REST API
Client knows he needs to authenticate so he sets up the required ECP headers (Accept: application/vnd.paos+xml and PAOS: urn:liberty:paos:2003-08;urn:oasis:names:tc:SAML:2.0:profiles:SSO:ecp)
SP sees client is not authenticated and returns a SOAP Envelop containing PAOS Request.
The client is responsible to send this to the appropriate IdP on its ECP consumer service.
The IdP challenges the client for authentication
The IdP returns a response in the form of another SOAP Envelop, containing the saml Response in its body
The client must send this response to SP's ECP/SOAP assertion consumer service
The problem is all of this works until step 6. On this step I have the problem, that the Body of the response envelop contains a Destination attribute, which points to the POST assertion consumer service of the SP. This destination attribute is set by keycloak and mismatches the actual ECP service that I want to send the response to. The SAML library we are using is opensaml and it checks the request URI against this Destination attribute and if they do not match it throws an exception org.opensaml.xml.security.SecurityException: SAML message intended destination endpoint did not match recipient endpoint.
I understand why this exception is thrown, but cannot understand how I can configure Keycloak with the ECP/SOAP service of the SP. In Keycloak's admin console I can only configure the URLs for SSO POST/Redirect and SLO POST/Redirect, but nothing about ECP.
I'm currently in the process of configuring another IdP, but I would really like to make sure that Keycloak can also be a supported server for our solution.
Can't you just read the paos:Request responseConsumerURL and post the idp response to that url?
At least, that's how I managed to do it.
We would like to implement such additional configuration for SSO in our organization:
Web application (with SpringSaml) --- WSO2 IS 5.0.0 --- SimpleSaml as IDP for WSO2 IS.
Our working SSO configuration is:
Other Services --> SimpleSaml
Almost all works OK. But if I login to WSO2 IS from my application and from other service I login to SimpleSaml and that other service send LogoutRequest to SimpleSaml, WSO2 IS receive LogoutRequest from SimpleSaml but don't answer and WSO2 IS produces error:
ERROR {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator} - Context does not exist. Probably due to invalidated cache
I think, it is due to absence of sessionDataKey parameter in the logout request from SimpleSaml.
In IDP metadata for SimpleSaml I set a SingleLogoutService as
<md:SingleLogoutService Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-Redirect" Location="https://<server>:9443/commonauth"/>
Maybe it is not right URL. But I don't find SingleLogout URL for our configuration.
Could somebody help to resolve this problem or it is not possible to use WSO2 IS in such configuration?
Many thanks in advance!for
P.S. I'm very sorry for my english
What I understood from your comments that you have the setup of SimpleSamlPHP as your IDP which has connected to multiple SPs.Even the SimpleSamlPHP connected to WSO2 IS too.One of the SP send the Logout request to your SimpleSAMLPHP and the SimpleSAMLPHP pass the Logout request to WSO2 IS.
Let me describe how the logout request works on SP initiated Logout request.
LogoutRequest issued by SP to IDP
IDP determines authenticated SPs for given user session. If there are no SPs, other than the SP who sends logout request, the profile proceeds with step 5. Otherwise, steps 3 and 4 are repeated for each SP
LogoutRequest issued by IDP to SP
SP issues LogoutResponse to IDP
IDP issues LogoutResponse to SP who sends logout request.
The Logout URL you can make your custom URL where you want the user to redirect.
Refer the below Url to configure the external IDP to WSO2 IDP.
http://pushpalankajaya.blogspot.com/2014/09/leveraging-federation-capabilities-of.html
If you are using /samlsso end point in WSO2IS, It means that your are using SAML2 SSO. Therefore, you must send a proper logout request to the /samlsso end point. If you need to get more idea about SSO logout with SAML2 SSO, Please go through the below URL.
http://xacmlinfo.org/2013/06/28/how-saml2-single-logout-works/
Ping Federate Logout From IdP flow as from the Ping Federate Documentation
Sequence
User initiates a single logout request. The request targets the
PingFederate server’s /idp/startSLO.ping endpoint.
PingFederate sends a logout request and receives responses from all
SPs registered for the current SSO session.
PingFederate redirects the request to the IdP Web application’s
Logout Service, which identifies and removes the user’s session locally.
The application Logout Service redirects back to PingFederate to
display a logout-success page.
But, I have a slight problem regarding the application Logout Service , which needs to set at IdP adapter configuration.
The problem is i have dynamic logout URL , due to which i can't use it in the Logout Service.
Currently i am trying to initialize the IdP initiated SLO. For which i am passing TargetResource to redirect user to IdP after SLO success.
https://idp.pf.com:9031/idp/startSLO.ping?PartnerSpId=testSpId&TargetResource=http%3A%2F%2Fdynamicsubhost.baseurl.com%3A8080%2Fweb%2Fmy-bank%2Flogout
Question :
So how can i rig the PingFederate setting to skip the Step 3 , so instead of redirecting to the IdP Logout service it redirects to TargetResource.
What i have tried :
I know it sounds cheesy , but actually i kept the IdP logout service to blank. But obviously it wasn't working.
P.S The awkward thing is when i was using same PF server for
configuring both IdP and SP server it was working well. But when i
switch to separate instance of PF server for hosting the PingFederate
Server the consequence is showing up.
You may add the "resume" parameter in your logout service redirect. This is how I implemented it in .NET. I have a web service that handles the SLO and calls this redirect:
Context.Response.Redirect(< SP Server DNS > + Context.Request("resume").ToString(), True)
This redirect will instantiate the Logout service and then redirect back to the value of the targetResource parameter that you specified when you called the logout service.
If your targetResource does not have a value the default SLO URL will be used (this is set in the Admin Console: SP Configuration > APPLICATION INTEGRATION SETTINGS > Default URLs)
For reference: Just review the implementation of the sample application that you may download here
https://www.pingidentity.com/content/dam/pic/downloads/software/integration-kits/-NET-Integration-Kit-2-5-1.zip