OAuth is an open standard for authorizing access to data. It is a service that is complementary to, but distinct from, OpenID.

learn more… | top users | synonyms

3
votes
0answers
130 views

Using multiple oAuth identity services simultaneously

This question is somewhat acedemic in nature. While educating myself about the topic of Security via a Bearer Tokens for a back-end service that I am working on, and specifically about oAuth2, a few ...
1
vote
1answer
1k views

ADFS 2012 R2 (3.0) JSON web token validation

Our client would like for us to utilize ADFS 2012 R2 (aka 3.0) as the primary means for two security features in internal apps that we are building: The web app (there are two .NET & Angular) ...
0
votes
0answers
35 views

Authentication API that just returns ID with right email / password combination a security problem?

Two companies. MegaSocialPlatform CorporateCompany. CorporateCompany wants that their employees can reuse their current login credentials of CorporateCompany.com on MegaSocialPlatform, so ...
5
votes
2answers
1k views

Securing a multi-tenant, multi-database REST API

I am looking to improve the security of an existing REST API accessed over SSL. The web service is multi-tenant, such that each tenant has an assigned TenantId. The problem I facing can be summarized ...
2
votes
2answers
326 views

How does a user get authorized wihtout authentication

I have a back-end (API) and a front-end, eg a web server, and I have users and ID-providers. The web server is provided by a third aprty and it may just as well be a mobile app, but whatever the case ...
0
votes
1answer
177 views

Why not oAuth for Authentication - AKA what is bad about OpenID Connect [duplicate]

I read many questions and answers on this forum stating that oAuth is for authorization, OpenID is for authentication and more than a few of them goes on to say that OpenID Connect provides ...
4
votes
2answers
69 views

Does changing my password after OAuth login in mobile app help reduce risk?

When you use a mobile app that needs Google OAuth login, you can't fully trust the third party app because you can't tell what url the webview is using. Who knows if they aren't storing my login and ...
1
vote
1answer
157 views

Correct auth method using oAuth 2.0?

Been trying to wrap my head around oAuth 2.0, but I'm struggling figure out the correct way to implement it for our system, as there are so many different approaches. Our specifications are: Secure ...
0
votes
1answer
125 views

How to incorporate the man-in-the-middle

I am designing a web-based back-end for an online service. The service could support web based portals and mobile apps as front end. But I am stuck on how to support third-party, i.e untrusted, web ...
1
vote
1answer
324 views

Why isn't Google oauth2 giving a refresh token for Client-side applications?

I've been reading Google's oauth2 documentation for Client-side applications. I was surprised that nowhere does it mention refresh tokens. Also, their examples hint that the access_token has a default ...
1
vote
2answers
66 views

Is it normal if user gets logged in Facebook or Twitter after they use Like or Tweet button? [closed]

Personally I don't use social networks, so I'm not sure about their behaviour. Currently I must code website which heavily depends on "Likes" and "Tweets" about articles. Each article has Like and ...
3
votes
2answers
124 views

What's the point of the client secret in OAuth2 if it doesn't need to be used?

Simple as that! Clients that can't maintain the secrecy of the client_secret in OAuth2 don't have to use it. So what's the point of having it at all, if it's not necessary? What am I missing here?
2
votes
2answers
73 views

What are proper security precautions when enabling multiple connected social accounts or login/authorization methods?

It is popular today for frameworks and social sites to enable multiple authorization options when creating websites. For example, allowing a user to login with GitHub, Twitter, Facebook, etc. In ...
2
votes
2answers
207 views

Why do we trust session info over the wire but not an OAuth access token?

I've been spending a lot of time looking into building an API that needs to be accessible by a single page JavaScript application and how to make it as secure as possible. A lot of what I'm reading ...
1
vote
0answers
132 views

Facebook Login and OpenID Connect [closed]

Can someone confirm whether Facebook Login API (https://developers.facebook.com/docs/facebook-login/v2.2) is based on OpenID Connect (http://openid.net/connect/) specification? Thanks, Sameer
1
vote
1answer
297 views

storage of client credential on OAuth2 server

I'm developing an API and used a recommended implementation of OAuth2 protocol: PHP OAuth2 Server. This library stores client ID and client secret as plain text in a database table. Note that I ...
2
votes
1answer
78 views

Clarification on OAuth Client Secret

I have a little trouble understanding, how to use OAuth to secure an API. So I developed a RESTful service, which I would like to secure to authenticated access. I first opted for HTTP Basic + TLS, ...
21
votes
3answers
7k views

Should we store accesstoken in our database for oauth2?

I have a requirement to implement Facebook and Google login in my web application. I also need to access a user's Facebook/Google+ friend list. I have gone through the complete OAuth2 documentation of ...
3
votes
1answer
220 views

How to store client secret securely on application base in Windows?

I would like to store valuable client data (ex. passwords, OAuth tokens) in a way that they will be accessible only from one application (separation on application base). The mechanism must be ...
6
votes
1answer
893 views

Why should I persist OAuth 2 access tokens along with refresh token

That's something I've came across in a couple articles about OAuth 2: when it comes to persisting refresh tokens to database some authors prefer to store access token as well, or at least mention it ...
4
votes
2answers
316 views

Using OAuth 2.0 without token storage

I am building a system for a product which requires authentication and authorization. Naturally I have chosen using OAuth 2.0 as it is a commonly used protocol and has proven to be useful. I am ...
1
vote
1answer
105 views

Can Facebook login to my app?

This sounds maybe like a stupid question, but I'm wondering myself if this is theoretically possible. Let's say I'm using Facebook login in my app. If the login is successful I get I get back an ...
1
vote
0answers
130 views

Best practices for OAuth 2.0

I understand that OAUth 2.0 really just relies on SSL to encrypt the contents of the bearer token. However, are there any other best practices one should follow when securing OAuth 2.0? I know you ...
1
vote
1answer
111 views

Is it safe to store important data in an encrypted access token?

Is it safe to store important data in an encrypted access token? For example, instead of storing access tokens in a database, not storing them at all and putting their associated data into them before ...
1
vote
1answer
177 views

Securing an OAuth / OpenID Connect identity in a cookie for easy login

I have a website that uses Azure Active Directory or Google+ for logging in. I go through an OAuth2 login flow, and the users email along with their tokens are returned to me by their identity ...
1
vote
1answer
632 views

advantages of http basic authentication over token-based (e.g. oauth2)?

I am interested in the question if there are any possible advantages to securing a given REST API for web clients and mobile apps with http basic authentication (over https of course) over a ...
1
vote
1answer
55 views

Is there an overview over all OAuth2-related specifications?

I recently started to read up on OAuth2, and just now noticed how many extensions exist to this protocol. Is there an overview or some kind of a map of OAuth2 and all of its (official) extensions? I ...
4
votes
2answers
448 views

Google+ Sign In - One Time Code Flow vs Pure Server Side flow

I'm reading the documentation about Google+ Sign In, more specifically, its server side flow. It says (https://developers.google.com/+/web/signin/redirect-uri-flow) that one-time code flow has ...
3
votes
2answers
4k views

Secure REST API and Single Page App by using external OAuth 2 Authorization Code

I am trying to understand how to implement an OAuth 2 Authorization Code flow when having both a single page JS app and a REST API. The aim is to secure access to the REST API by offloading ...
4
votes
2answers
107 views

OAuth - Why exchange the authcode for a token

In OAuth, when the user authorizes the client the client gets a authorization code, the client then exchanges this for a token that is used to access the resource. Why do we need to do this extra ...
1
vote
3answers
243 views

OAuth2 vs. JSON authentication

1) To what extent is OAuth2 more secure than JSON authentication (both over SSL)? The context is a client (one server) querying another server (via API) within a local network using RESTFul. Prior to ...
2
votes
2answers
240 views

OAuth Authorization flow and redirect

I started looking at OAuth - Google's and Facebook's implementation. Both of the implementations, in the authorisation flow, seem to send the "Authorization code" back to the web browser. I was ...
1
vote
1answer
94 views

OAuth implicit flow and confused deputy problem

I'm reading about Google OAuth and implicit flow. In Google docs it says that the access token received using the implicit flow must be validated otherwise the application might be vulnerable to ...
26
votes
3answers
15k views

What are the dangers of allowing “less secure apps” to access my Google account?

According to https://support.google.com/accounts/answer/6010255: Google may block sign in attempts from some apps or devices that do not use modern security standards. Since these apps and devices ...
0
votes
1answer
675 views

Why can Oauth2 redirect_uri be a non-https URI?

I'm building a small site which I would like to integrate with LinkedIn for authentication. LinkedIn says that redirect_uri's can be either http:// or https:// (not having to pay for a certificate is ...
1
vote
0answers
115 views

suspicious oauth2 implementation detail in facebook API

in RFC 6749 The OAuth 2.0 Authorization Framework 2.3.1. Client Password definitely states that authentication at TokenEndpoint can be done in two alternate ways HTTP basic authentication - ...
9
votes
1answer
4k views

Compromised JSON Web Token (JWT) Bearer Token

We are implementing a REST service that requires authentication and authorization. Because of the stateless nature of REST API's, we want to use JWT to make authenticated calls to the API through a ...
2
votes
1answer
169 views

Auth / Login token schema

According to this answer, a valid login token schema would consist of the username (U) the time of issuance (T) and secret key K owned by the server only The suggestion then is to concatenate the ...
11
votes
3answers
4k views

OAuth2 - Resource Owner Password Credentials grant

The OAuth2 spec describes the Resource Owner Password Credentials grant type and authorisation flow here. I understand that only 'trusted' client applications would be allowed to use this grant, for ...
5
votes
2answers
596 views

Multi sub-domain login for content, spring security for main

Illustration : mainsite.com and contentsite.com both are being developed for same company by two teams. we will have login etc at mainsite.com contentsite.com will have some content that is not ...
3
votes
2answers
361 views

Am I understanding correctly how to stop a certain OAuth2 session fixation attack?

Please find here described an OAuth2 session fixation attack. Is the attack possible? And am I understanding correctly how it can be stopped? The attack Mallory starts logging in at ...
2
votes
1answer
82 views

Usefulness of bcrypt(UUIDv4())

One of my colleagues is working on securing OAuth 2 client IDs and secrets for our OAuth server and he has come up with this scheme where he would not only use UUID v4 to generate random values, but ...
0
votes
2answers
396 views

Steps to create user authentication system between mobile and server

First time doing a secure login from a mobile app to a server (built in java). I want to understand if I got this right. Login in for the first time: 1. On the mobile device hardcode a security ...
1
vote
0answers
526 views

Mobile Backend Server: How to validate authenticated client is valid?

Consider this scenario Step 1: App asks user to "Sign In" using Google or Facebook Step 2: Once authenticated, app sends user's Id (from Google/Facebook) to My App Server requested to app ...
7
votes
1answer
487 views

Is it possible to implement a nonce without storage?

I am looking at implementing an authentication module using OAuth 2.0 Client and I am trying to avoid having any server state. I was going thorough a few other questions when to use nonce? Is it ...
0
votes
0answers
162 views

OAuth - Facebook custom authorization grant

I've developed my own custom authorization grant. The steps I am undertaking are the following: I get the facebook authorization code from the mobile device (this is an an API for mobile devices) I ...
7
votes
4answers
1k views

Is 'Bring your own Identity' as the only authentication option a valid practice?

This question is mainly aimed at OpenID Connect, when it is fully realized. I understand the aversion to signing in with a social networking site, but from what I understand about OIDC, its supposed ...
2
votes
1answer
923 views

Facebook oAuth2 for Javascript client application

When implementing Facebook login using oAuth2 (the Javascript version), I receive an access token back from the Facebook auth server. So far so good. The problem I have is that I want to implement a ...
0
votes
2answers
422 views

Securing Public Web Services - What is the best practice? [closed]

There seems to be a number of ways to secure web services. OAuth, API Keys, Tokens, WIF, etc. Since security is not my area of expertise, I am asking what is the best ways to secure public web ...
2
votes
1answer
172 views

Using OAuth as Security For E-Commerce Sites

I need some help in understanding the security risks if I want to use OAuth 2.0 (Facebook, Twitter and G+) as standard login provider for an E-Commerce site. Keeping in mind that I will not be saving ...