I have the following scenario:
Sharepoint 2010 with Claims based authentication web application.
ADFS 2.0 which has configured Claims provider trust to the ThinkTecture IdentityServer.
ThinkTecture IdentityServer which has configured ADFS 2.0 as a relying party.
Sharepoint 2010 has SPTrustedIdentityTokenIssuer configured pointing to ADFS 2.0.
Now when I'm loging to the Sharepoint, I'm redirected to the ADFS 2.0 Home Realm page, when I choose Identity Provider. Then I'm redirected to the ThinkTecture IdentityServer. Then I'm logged with my credentials from IdentityServer and I'm redirected back to the ADFS and then to the Sharepoint. The problem is, that sharepoint show error message. I'am adding log records from sharepoint:
Authenticated with login provider. Validating request security token.
Trusted login provider 'SAML2 Provider' is not sending configured input identity claim type 'http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddress'
SPSecurityTokenService.Issue() failed: System.ServiceModel.FaultException: The trusted login provider did not supply a token accepted by this farm.
at Microsoft.SharePoint.IdentityModel.SPSecurityTokenService.SPRequestInfo.ValidateTrustedLoginRequest()
Access Denied: Authentication is required.
I was find out, that the token returned from Identity Server to ADFS contains emailaddress claim, but the token returned from ADFS to SP does not. It is a strange, because I have ADFS configured to support emailaddress to pass through for all claims
(in Claims provider trust for identity server). Do I need to setup adfs somewhere else? I am newbie in adfs.
What I want to achieve is to forward my request through the ADFS to the IdentityProvider (in this case ThinkTecture IdentityServer) and to get back the token from IdentityProvider. ThinkTecture IdentityServer is only in my test environment in the real environment it will replaced by Oracle Identity Federation.
The target problem is to integrate Sharepoint 2010 with the Oracle Identity Federation. But the problem is, that the Sharepoint doesn't support SAML 2 protocol which OIF will provides as exclusive endpoint binding. So I'm trying to hack it with the ADFS (as a somethinkg like proxy) which will communicate with Sharepoint based on the SAML 1.1 on one side and with the OIF based on the SAML 2 on other side.
This is the following extract from IdP metadata:
<md:IDPSSODescriptor protocolSupportEnumeration="urn:oasis:names:tc:SAML:2.0:protocol">...
So I have no option to use WS-Federation.
I will appreciate advise if this is a good way how to achieve the required behaviour.
thanks
So your path is SP -> ADFS -> IdentityServer?
The problem is that the email address is not being passed through. So you have to set up IdentityServer to generate the email address claim and you have to setup ADFS to pass through all claims. Then configure SP to accept email address as a claim (using the SP Powershell commands).
Add: You need to create pass through claim rules for the email claim in ADFS - both for the claims provider trust and the relying party trust.
OIF supports WS-Federation - refer ORACLE IDENTITY FEDERATION 11g R2 - so no problem to federate OIF with SP.
Related
Is SAML an authentication mechansim. ? I have seen this being written in many places.
As per my understanding SAML is not an authentication mechanism but a way to exchange authentication and authorization data between a service provider and an identity provider. ?
Both Service provider and identity provider have to be SAML compliant or basically understand SAML to take part.
Authentication can be done by any means like oAuth, Form etc. and then SAML exchange happens.
Best Regards,
Saurav
Actually SAML is a internet standards based technology to achieve web-based single on.
The actual authentication, which happens at the SAML IdP is out of scope of the specification.
However sometimes implementors do no accurately distinguish between SSO and authentication.
Chapter 1 from SAML Technical Overview, a document published in 2008 and still a good read:
The Security Assertion Markup Language (SAML) standard defines a
framework for exchanging security information between online business
partners.
...and then Chapter 4 in the same doc
SAML consists of building-block components that, when put together,
allow a number of use cases to be supported. The components
primarily permit transfer of identity, authentication, attribute, and
authorization information between autonomous organizations that have
an established trust relationship
SAML (Security Assertion Markup Language) is an identity federation protocol.
(1) Traditionally a web application utilizes a local data storage (such as MySQL which is used to store username/password credentials) to accomplish the login authentication.
On the other hand, a web application can leverage a third-party SAML Identity Provider (IdP) to accomplish the login authentication if the web application has been integrated with a SAML Service Provider (SP).
(2) Usually a SAML IdP utilizes identity repository (such as OpenLDAP) to provide identity authentication for a SAML SP-enabled web application.
(3) A web application, which has been integrated with a SAML SP, outsources login authentication to a SAML IdP.
Without loss of generality, we assume that the SAML IdP has been configured with OpenLDAP.
A typical SAMP SP-intitiated authentication procedure can be described below.
(I) A user launches a web browser to access a SAML SP-enabled web application.
(II) The user is redirected to a SAML IdP which will prompt username/password login screen.
SAML SP sends a SAML request to SAML IdP.
(III) The user submits the username/password credential.
(IV) The SAML IdP leverages OpenLDAP to validate the username/password credential.
(V) The user is redirected back and logged in to the web application if the user has been authenticated by OpenLDAP successfully.
SAML IdP sends a SAML response token to federate the user identity (such as username) to SAML SP-enabled web application.
(4) How to build and run Shibboleth SAML IdP and SP using Docker container demonstrates how a SAML IdP utilizes OpenLDAP to provide identity authentication and then federates the user identity (such as username) to a SAML SP-enabled web application, thus accomplishing the login authentication for the web application.
I'm trying to authenticate users with the SAML protocol.
So far I have two applications in two different identity providers (Auth0 and OneLogin) to test. I also have my service provider.
What I'm trying to do is authenticate users without redirecting them to any Identity Provider login form.
Something like this:
The user tries to log in to my application (made in React)
My server provider receives the request made by the user and sends
the credentials (username and password) to an identity provider
using the SAML protocol.
The identity provider validates the credentials, if they are
correct, return a SAML assertion to my server provider; otherwise,
it will return an error.
Depends on the identity provider's response if the content is sent
to the user or not.
I know that it is not the intended use of SAML, but I want to know if there is a way to do it and how it will be possible.
Any help or advice will be well received, thank you.
That's not how SAML works and I'm not aware of any SAML identity providers that accept the user's name and password.
It is possible to include the user's name in the SAML authn request sent to the identity provider but there's no provision for including a password.
I think there are a number of security considerations if you were to prompt a user for their credentials for one web site (ie the identity provider) at a different web site (ie service provider).
Using SAML SSO, if the user isn't already authenticated at the identity provider, it will prompt the user to login.
I am trying to understand SAML and the IDP / SP model by following this auth0 tutorial.
https://auth0.com/docs/protocols/saml/samlsso-auth0-to-auth0
In this tutorial you create two auth0 tenants.
The first tenant (tenant 1) is the service provider, the second (tenant 2) is the identity provider.
In the section where we setup the second tenant I am having trouble understanding what is described in this line:
In this section you will configure one Auth0 tenant (tenant 2) to serve as an Identity Provider. You will do this by registering an application, but in this case, the 'application' you register is really a representation of tenant 1, the SAML Service Provider.
I'm confused about this because I thought the service provider is essentially a wrapper for all of the different applications you need to access through the IDP. So in my interpretation, I would think the application we create would exist inside the first tenant.
Would someone explain why in this example we set up the IDP to contain the application and how it is a representation of the service provider (tenant 1)?
Agree this article is somewhat confusing.
The key is "In this step, you will test your sample HTML application that uses the Auth0 SAML connection you set up in Tenant 1 to perform SSO via SAML against Tenant 2, serving as the SAML Identity Provider."
In SAML, there are two kinds of SP.
An SP can be an application so the path would be:
Application --> SAML IDP
or you can have an SP-STS (Security Token Service) i.e. an intermediate IDP acting as an SP.
Here the path is:
Application --> SAML SP --> SAML IDP
Basically, the SAML SP is just pass-through.
Normally what happens is that when you authenticate, the application redirects to the STS. You can authenticate here. However, if this STS knows that there is another STS upstream it will ask you via Home Realm Discovery which STS you want to use.
We have requirement of build .NET based plugin/component for enabling Authentication against multiple IDP providers like ADFS, Azure AD and Shibboleth based on DB configuration. i.e, depending on the configurable parameter the anonymous user will be authenticated against any one of the IDPs like ADFS, Azure AD or Shibboleth IDP.
Our application URL ("https://www.contoso.com/ProcessToken.aspx") will be registered as RP Identifier in all of the 3 providers.
We won't make any web.config changes for any of the providers.
At run time, User will access common page(Proesstoken.aspx) who needs to get redirected to the any of the Login page URLs at the provider (ADFS, Shibboleth, Azure) for Authentication based on User Organization. (For ex: User A to ADFS, User B to Shibboleth etc)
After Successful authentication at the IDPs the user needs to get redirected by the provider (ADFS/ Shibboleth/ Azure AD) to the RP Url registered.
In the redirected page (ProcessToken.aspx), we are planning to get the security token and decipher the claims required.
The main intention is to decouple authentication away from application logic and it should be extendable to other providers in future.
PS: Considered options like OWIN Authentication Middle Tier, .NET Component etc.
Need guidance on How and where to start.
Have a look at IdentityServer 3 which implements this multi-auth scenario or OWIN : ASP.NET MVC application with multiple authentication options.
The main point is that you use NuGet to download all the protocols you require and than use OWIN to pull them all in via app.use.
You can configure ADFS to have Claims Provider Trust with the other IDP's Owin will acknowledge the authentication. The difficult part will be reading the attributes from the tokens. ADFS under the covers in conjunction with the Owin framework use ws-federation, I have not figured out how to read the SAML.
What gets confusing is that at one time the answer was WIF but now that 4.51 has been released, WIF was moved into Owin. The documentation for a multi-tenant application is sketchy at best.
I have Sharepoint which has configured claims based authentication with the adfs. ADFS is configured to use third party claims provider trust. So when user is accessing sharepoint he is redirected through the adfs to the third party identity provider login page. This identity provider (IdP) returns saml2 token back to the adfs and adfs redirect user to the sharepoint.
the problem is that third party IdP is configured to return only specific saml attributes (claims). I need to configure ADFS to understand this specific attribute.
the custom saml attributes looks like:
<saml:Attribute Name="CustomID">
<saml:AttributeValue xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion">12345</saml:AttributeValue>
</saml:Attribute>
How can I use this claims in ADFS and then send it to the sharepoint?
thanks.
Set up the ADFS / RP config. for the RP to pass through all claims instead of getting them from AD.