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Questions tagged [openid-connect]

OpenID Connect is an optional standardization of identify and profile data on top of OAuth 2.0 when OAuth is used for authentication.

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Is it ok to forward a JWT between two custom services?

I'm using Azure AD Implicit Flow for authentication between a SPA and a WebApi. I want to know if it would be ok/save to redirect from the SPA to a intermediary service of my own as well with the ...
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29 views

Do I have to use two OAuth/OpenIdConnect bearer token with PKCE?

We have some REST APIs exposed to public applications. Those applications are registered with an (application protocol scheme) redirect URL and we provide to the developer a client secret and client ...
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36 views

Architecting a solution with native login and 3rd party login via OAuth/OpenID Connect using dotnet core

I am building an API driven application that will have a native login with username and password, and will also need to grant 3rd party access via OAuth/OpenID Connect in the near future. A pattern I ...
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1answer
38 views

Is re-prompting a user for credentials an effective measure to prove a user's identify

I'm upgrading the authentication of an application from self hosted forms authentication to OpenID Connect through Azure Active Directory B2C (AAD B2C) and have found a few pages which re-prompt the ...
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85 views

OAuth 2.0 + OpenID for authentication in mobile apps

Current Way We have a mobile application that uses SMS based OTP for logins. Till now, since the app was considered as trusted party, we had no authorization flow like in OAuth. Our flow was (similar ...
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27 views

SSO authentication & authorization architecture/implemenation

We got a bunch of different services (SPAs + API GW, legacy JavaEE apps, etc.). Each of those is usually ran in multiple instances (customer specific instances). The plan is to federate them under a ...
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29 views

Did I get it right? OAuth2, OpenID and OpenID Connect

After a lot of research about authentication and authorization, I reached the following but not sure if what I reached is the correct thing so please help me out: Authentication is who you are. ...
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1answer
52 views

Is it safe to just forget OAuth tokens, and not invalidate them in a mobile app?

I have a mobile application that a user signs into using OpenId Connect and OAuth 2.0. Currently when the user logs out, I open up a webpage to the end_session_endpoint (http://docs.identityserver.io/...
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2answers
47 views

Is it dangerous not to verify the signature of an id token issued by an external authorization server?

I need to retrieve some values from an id token issued by an external authorization server inside a private network. I asked for the certificate used to sign the jwt in order to verify it but I've ...
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1answer
49 views

How can I securely disable CSRF validation for native clients when browser clients access the same API?

I have an API endpoint that is accessible by both native (console, mobile apps) and Javascript based clients. How do I ensure that the CSRF AntiForgeryToken is only invoked during Javascript calls? ...
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1answer
73 views

Is it a good idea to notify a user that they signed up with a social-login account?

Say my website provides three main ways to signup/signin: Google, Facebook and typical username/password. Is it a good idea to flash "Please login using your Google account" if a user tries to login ...
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130 views

OpenID connect authentication with cookie authentication middleware [Asp.Net MVC ]

In my ASP.NET MVC based application I am using 'OpenID connect authentication' middleware with 'cookie authentication middleware' (session/transient cookie). While accessing the application I ...
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1answer
89 views

JWT access tokens: Too much information?

I've recently encountered the practice of systems using JWTs as Access Tokens. I have a concern and I'm not sure if it's unfounded: I associate JWTs with the OpenID Connect protocol, where there are ...
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1answer
39 views

What are the pieces of information delivered in a user profile at the end of a OpenID Connect flow?

From what I understand about using OpenID Connect (over OAuth2), is that we end up with some JSON containing information about the user. That information is transported as a JSON Web Token. ➥ What ...
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1answer
51 views

What is the proper flow for authentication?

I'm tasked with migrating a group of .Net WebForms applications from a current custom username/password login scheme to an oauth2/openid connect based authentication and authorization. This specific ...
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1answer
240 views

MS Active Directory vs OpenId Connect?

I have to setup a user authentication system which shall be used for more than one application. Coming from Windows background, Microsoft Active Directory came to mind naturally. But I have heard ...
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1answer
70 views

How to properly deal with different user-facing login mechanisms?

I'm wondering if it's possible to deal with a login mechanism that is dependent on the user identifier. For example, the user can have access using OpenId, OAuth or token. But how can we "help" the ...
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1answer
37 views

How does the authorization work after authentication using OpenID Connect

Suppose that a client gets an ID token and access token from the auth server after successful authentication. The client now sends a request to the application server (request contains access token ...
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1answer
45 views

Is Browser based flows required for most IdP based Authentication standards?

I'm going to apologize in advance for the rambling nature of this question, I've read a lot about SAML and OIDC and other standards, just trying to understand why browsers seem to be so essential for ...
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1answer
71 views

OIDC Hybrid flow

I'm trying to understand the Hybrid flow of OIDC. Am I correct in thinking that an authentication request is made to the authorization endpoint, which then responds with the authorization code, id ...
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1answer
111 views

Bypassing OpenID Connect audience claim with implicit grant

As an example, let's look at how authentication works with Kubernetes: Specifically, let's focus on what the api server does. To authenticate the request, it: Verifies that the JWT signature is ...
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1answer
135 views

Authorization on OAuth2 application that is both Client and Resource Server

I am trying to understand how would an application which uses OAuth2 (OIDC) server implement access control to its own resources. In this case, the application is both 'Client' and 'Resource server' ...
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489 views

Auth0 vs Firebase = oidc vs Firebase Tokens

I am trying to choose between Auth0 and Firebase as my identity provider. I am building a SPA with a Backend API and I would like to use Auth0 or Firebase for all the logic regarding users/passwords/...
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1answer
75 views

OIDC - what is the point of two separate tokens - access and id?

I struggle to understand why don't we just have a single token that serves both purposes - authorisation and authentication? In some sense, the access token does more than just authorisation. It also ...
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0answers
544 views

Token Exchange at a REST API Gateway to federate authentication while maintaining detailed authorization (think ABAC) within the API?

I'm on the verge of creating a service within our resource server that would exchange an externally generated access token for an internally generated access token. However, this feels wrong. I have ...
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1answer
1k views

Why does OpenID Connect (“OIDC”) use a `nonce` claim instead of the `jti` registered claim

According to the spec, OpenID Connect uses nonce as the registered claim name, but RFC 7519 already includes a registered claim named jti for this same purpose. Was this an oversight, or was there ...
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118 views

Web application making a call to a REST API when already authenticated

I'm new to ASP.NET Core and OpenID connect/AzureAD, so I'm looking for some validation (or otherwise) of my approach. Extensive reading/googling over the last couple of weeks while I've been learning ...
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23 views

Open ID Connect: Second ID-Token only has “sub” attribute

I am implementing a customer-IAM solution using WSO2 Identity Server 4.5.1. One of the (few) applications integrating with me via Open ID connect has discovered an unexpected behaviour, and I need ...
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238 views

Is passing claims about the user in an access token “abusing” OpenID Connect?

First, let me assure you that I have read a number of posts on the topic before asking this question, but I am still confused and would appreciate more insights. So, here's the premise: There is a ...
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1answer
48 views

Non-standard OIDC flow: How safe is this?

I have been made aware of an application, at a client, that claims to use OIDC to authenticate users. This is however done via a non-standard flow that I find hard to assess from a security standpoint....
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1answer
1k views

Implicit flow login from SPA

Looking at the implicit flow to login with https://github.com/IdentityModel/oidc-client-js and https://github.com/IdentityServer/IdentityServer4.Samples/tree/release/Quickstarts/7_JavaScriptClient . ...
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3answers
4k views

Why isn't PKCE encouraged for Single-Page Apps?

A lot of services today still recommend the implicit flow for an OpenID Connect/Oauth2 token exchange when developing Single-Page Apps. (See Okta, Google, Auth0) Some newer guidance out there points ...
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1answer
144 views

OpenID Connect, OAuth2, and deleted accounts

If I use OpenID Connect or OAuth2 for authentication, and a customer deletes his/her OAuth2 provider (Facebook) account, how can I safely associate a new authentication with a different OAuth2 ...
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82 views

OAuth2 Implicit Flow. Additional protection for access_token from interception

We have a one-page JavaScript application that authenticates the user on our server using the OAuth 2.0 protocol (and the AddId-Connect add-in). After authentication, the server issues an access_token ...
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286 views

OAuth2 Implicit Flow and silent autologin by Windows Identity. Possible new attack vectors?

We have a typical Single-Page js application that authenticates to our own authentication server using the OAuth 2.0 protocol (and the OpenId-Connect add-in). The customer sent a request to implement ...
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0answers
830 views

Protecting frontend code for SPA + Restful API with OIDC

I've got an Angular 1 SPA with a Restful API that I'd like to restrict access to. As I understand, typically the OIDC Implicit flow is designed just for this. However, I consider the frontend SPA code ...
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2answers
70 views

Does the OpenID Connect Core specification incorrectly define the OpenID Provider and Relying Party in terms of human participants?

There are a few important definitions in the OpenID Connect Core specification that refer to a human participant, and at first glance it would seem that OpenID Connect only applies in cases where ...
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2answers
136 views

How can an end-user verify the authenticity of a third-party authentication provider's login form

Given the ubiquitous use of third party authentication providers in web apps today, how can end-users verify the authenticity of the login forms that collect their credentials? What's to stop a ...
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1answer
2k views

OpenID Connect: How to maintain a single sign-on experience between multiple web clients of the same umbrella application?

I'm considering how to take a fairly complex tiered application with multiple web apps that delegate back to the same application server, and migrate it to use OIDC authentication with auth code flow. ...
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0answers
29 views

Is there an use-case for checking the signature of an id_token using a js-app or a native-app

Let's say I am developing an client-based application for android/ios or a javascript application for any browser. To identify a user, I'll use OpenIdConnect with the implicit flow. The IDP will ...
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1answer
413 views

OpenID Connect/OAuth 2.0 and “fake” official apps

My question mostly pertains to OpenID Connect, but can be applied to OAuth 2.0 as well. When it comes to an OpenID Connect Client doing the "authorize" dance with the OpenID Connect Provider, the ...
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1answer
883 views

localStorage vs. HTTP-Only Cookies + XSRF: Is either better when it comes to XSS?

If I were to implement a common OpenID Connection pattern on a SPA, I might have the following relationship: Auth server <-----------> Client (browser) <-----------> App API server The ...
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1answer
298 views

Preventing CSRF with implicit flow and JWTs?

I'm reading through openid connect document ATM and it says: Put into a browser cookie the ID token can be used to implement lightweight stateless sessions. IIUC we want to avoid using cookies in ...
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1answer
127 views

Authentication providers for applications with no internet connection

I have an interesting use case where users need to authenticate to applications running in environments that might not have internet access or even access to an authentication server. Administrators ...
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0answers
538 views

Using the authorization code grant without using cookies?

I've been reading up on this for months and it seems like the whole thing could converge on what I'm summarizing below. I'm trying to arrive at the most ideal: OAuth2 OpenID Connect SPA / Mobile ...
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2answers
373 views

Is it ok to write OidC Bearer token to log?

During development we added to error logs details of http requests, including headers, to have better understanding for error investigation. Our architect pointed that we should not place sensitive ...
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0answers
54 views

c_hash claim in id_token and IdP MixUp mitigation

My understanding is that the c_hash claim in the id_token is used to prevent IdPMixUp attacks (http://openid.net/2016/07/16/preventing-mix-up-attacks-with-openid-connect/). I have two doubts: is the ...
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1answer
798 views

Security differences between fb connect and openid connect

I've been reading a lot about why plain oauth is bad for authentication, and one needs to at least build on top of it to reach an acceptable level of security. That got me looking at the major ...
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1answer
1k views

Why can’t I use query Response Mode with id_token Response Type (“implicit” flow)?

Although I think OpenID 2.0 is a cleaner and better authentication protocol than OpenID Connect, I have to implement an OpenID Connect IdP. One point I like in OpenID 2.0 is that the IdP can return a ...
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1answer
269 views

What web authentication protocol?

I need to implement a web-based authentication protocol so users I know can be given access to a third-party web application. I will work with the developers of that web application to implement both ...