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

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4
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1answer
553 views

Does returning `Access-Control-Allow-Origin: *` weaken the security of JSON GET responses?

The W3C CORS recommendation states: Certain types of resources should not attempt to specify particular authorized origins, but instead either deny or allow all origins. ... 3. A GET ...
2
votes
1answer
59 views

oauth and passing received toking to other application

An external software provider is hosting a website for us. We supply the login functionality via a restfull api(login/password over ssl). But the website is also the client for OAuth resource that it ...
4
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1answer
231 views

Oauth Consumer Secret?

Using OAuth you have a consumer key and consumer secret to identify your application and the user provides an OAuth access token and secret to authenticate your application access to their account, ...
0
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2answers
768 views

Google Authenticator - Counter Based [duplicate]

I'm trying to understand How google authenticator - counter based work. I have tried googling around finding a demo or at least how this work. I understand its a one time password but not like TOTP. I ...
0
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2answers
447 views

E-Commerce website with REST backend : do I have to secure Backend URLs accessed by Front end public pages?

I have an e-commerce website with a REST backend and a Single page JS as front end. I intend to secure my REST backend with OAuth2. I don't want to oblige the user to authenticate when he first comes ...
0
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1answer
279 views

Secure API access over SSL using oauth token

On the project that i'm currently working, we authenticate the clients by username and password. In this system each user has a key which is calculated from his password. However, we want to provide ...
4
votes
1answer
180 views

Are most app OAuth implementations vulnerable because of an obscured URL/origin?

I cringe every time I am prompted with OAuth in an app because of the lack of ability to verify that the page is actually originating from the represented source. Are most app OAuth implementations ...
3
votes
1answer
687 views

Why is OAuth 2.0 being used for mobile devices, and not OpenID?

Microsoft Azure Mobile services exclusively uses OAuth 2.0 for authentication, and many other providers mention the use of OAuth 2.0 specifically when referring to mobile devices. Question What ...
2
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0answers
168 views

If my users use Google OAuth for authentication, can I allow 3rd party apps to read data on my site?

Suppose I run a book club, and each of the members sign into my website using an OAuth token from Google, Twitter, Live, or LinkedIn. When the book club becomes popular, we discover that 3rd party ...
0
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1answer
267 views

What mechanism to use for simple and secure HTTP API access?

I am currently working on a service which offers a HTTP API for mobile clients. I want clients to authenticate in order to access my API. The server itself is doing the authentication there will be ...
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0answers
139 views

Generating API keys within an OAuth2 session for non-web-browser clients

I am using Google's OAuth2 for authentication for a website which also has a RESTful API component. I would like to support connections from clients which are not within a web browser. Also, I'd ...
0
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1answer
75 views

Why oauth use a secret with temporal credentials?

I am trying to understand oauth protocol. I am currently looking at temporal credentials section of the oauth 1.0 sepecification. I can't understand why the secret is needed along with the temporal ...
5
votes
1answer
99 views

If a service that I registered with FB/Twitter/G+ is hacked, what mischief can be done with the oauth token?

Case in point, TrueCaller. I had logged into TC using a proxy twitter account. I am assuming that as part of the authentication process, an access_token must have been saved by TC. If the hackers ...
4
votes
1answer
340 views

Authenticate users through Google using only an OAuth2 access token

I have a question about having users logon to my service using their Google Credentials. I've gone through the Using OAuth 2.0 for Login documentation provided by Google. The documentation mentions ...
2
votes
0answers
151 views

Implementing ACS with REST + many Identity Providers - Problems - Azure

I am trying to integrate ACS to use in my application's authentication system. Currently I have a Javascript client and a WCF so I had to use a REST architecture. I am quite puzzled on how to do ...
2
votes
1answer
312 views

Oauth2 - in traditional enterprise applications

I read about Oauth2, mostly in the context of social media service providers like Google, Facebook, Twitter where they Try to allow access to user data without giving password to third party ...
15
votes
4answers
4k views

Why use OpenID Connect instead of plain OAuth?

I just started to use OAuth 2.0 as a way to authenticate my users. It works great - I just use the identity/profile API of each provider to get a validated email address of the user. Now I read about ...
2
votes
1answer
207 views

API authentication without Oauth2 server

I have an API that needs user authentication. It is the same way Google authenticates when you use their API to access user data. I really don't want to setup an oauth2 server and I want user to login ...
4
votes
1answer
124 views

oauth2 account authentication

imagine you secured your application with oauth2 and several oauth providers. Now imagine someone using provider A with email bob@example.com to log in. Next time, someone uses provider B with the ...
2
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2answers
190 views

Does providing OAuth for mobile apps pose a security threat?

Let's take a look at the basic OAuth workflow: The basic idea is that the Consumer (App) asks the user to grant him access to the Service Provider. The service protects the user by asking him each ...
4
votes
3answers
3k views

SAML2 vs. OAuth - What are some reasonable relationships?

I have a service that allows SSO via SAML2. When SAML2 is used, we delegate the entire authentication process to the Identity Provider. We are considering adding OAuth in order to support some ...
6
votes
2answers
377 views

Client authentication vs. user authentication

I am currently looking into authentication protocols which work well with REST API, in java. There is something fundamental I don't understand: I read a lot of material about OAuth protocol, SSL, ...
10
votes
2answers
238 views

Preventing Voter Fraud on a Social Media Contest

I'm creating a contest that will allow users to login using their Facebook & Twitter accounts and submit votes on videos. My clients concern is that users will game the system by logging into ...
3
votes
1answer
351 views

Will using external OAuth providers for authentication protect users better than custom authentication?

On StackExchange we have the ability to choose to use our existing credentials with external OAuth providers such as Facebook or Google. This is convenient for users, but does it also have potential ...
0
votes
1answer
320 views

How can I ensure privacy when outsourcing authentication to an IdP (Identity Provider)

I need to outsource authentication to an IdP (Identity Provider) but I don't want that IdP to know of the calling site. The two major issues are the callback URL and the referer header. Is there any ...
3
votes
3answers
154 views

OAuth in open-source plugin

I'm designing an API server and client pair. Typically, I want the client to be in a WordPress plugin. I'd like to use OAuth or something similar to secure the requests. However, as you know, OAuth ...
2
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1answer
391 views

OAuth: client credentials vs tokens

Wouldn't it be much simpler and virtually equally secure to replace tokens by pure client credentials? Client credentials wouldn't expire and resource owners would always be able to modify their ...
2
votes
1answer
131 views

Does OAuth 2.0 provide a way to reliably regenerate a key only when a session is active?

I want to encrypt sensitive data on my app server (facebook app) in such a way that my app may only decrypt this data when the user is in an active session. I need to be able to reliably ...
0
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0answers
21 views

Facebook Login security concern with the javascritp JDK [duplicate]

Possible Duplicate: Isn’t OAuth, OpenID, Facebook Connect, and others crazy from a security standpoint? I have some real concerns about how to use facebook login for my wabb-app. I have a ...
3
votes
3answers
624 views

Access Control and Authentication using Facebook access tokens in a webapp

I'm working on a mobile app with a web backend. We'd like to have users authenticate (log in) themselves through Facebook only, so we don't have to store passwords etc. and don't force users to create ...
5
votes
1answer
292 views

API Design Model - Client Side Encryption

I'm currently designing a API Model to use. A user will have a 'secret_api_key' and a 'public_api_key'. They will send a request to my server with the public key, the form data, and then a hash. The ...
7
votes
1answer
2k views

Storing OAuth and other authentication tokens

We all know that when to store passwords, we should store it with one-way hash such as a variant of SHA, bcrypt or scrypt to prevent plain-text password leaks when the database is hacked. But what ...
3
votes
2answers
296 views

Is it possible to find out the oauth 2.0 client id and secret when an app is communicating with a web service?

I'm building an mobile app that needs to communicate with a web service. To make sure that only my app is communicating with the web service, I authenticate using OAuth 2. The fact that I need to ...
4
votes
1answer
894 views

Is it safe to store twitter access tokens client side?

After the Twitter oauth process, once I finally get my access_token_key and access_token_secret is it safe to store these in a javascript variable client side? As far as I can work out nothing can be ...
5
votes
1answer
72 views

What are the security challenges encountered with attribute exchange?

OpenID has Attribute Exchange, Facebook has Facebook Connect, and authorization services such as Oauth enable access to user data distributed across a range of content providers. What are the ...
7
votes
2answers
6k views

OAuth access token vs session key

Is there any advantage to OAuth vs cookie-based sessions (established via username/password) under the following assumptions? There is only one legitimate client to the service The OAuth client ...
9
votes
2answers
3k views

OAuth2 Cross Site Request Forgery, and state parameter

http://tools.ietf.org/html/draft-ietf-oauth-v2-30#section-10.12 says: The client MUST implement CSRF protection [...] typically accomplished by requiring any request sent to the redirection URI ...
6
votes
2answers
508 views

Should I avoid this token-based authentication scheme (that's not OAuth)?

I've dealt with OAuth before but I'm not too sure about the API I'm working with now. My question is basically, is this woefully insecure? As I understand it, oAuth does the following (roughly): ...
12
votes
2answers
5k views

Facebook API : App Secret - possible misuse

I've recently find out that by simple quick look into compiled code of one of our applications, you can get both App ID (API Key) and App Secret for Facebook API I suppose that we should really keep ...
1
vote
4answers
519 views

Security implications of using a OAuth-enabled password manager

I've resisted the idea of password managers for a long time. Bringing together passwords for all your online accounts in one place that is only protected by difficult-to-remember master password ...
7
votes
2answers
1k views

What is the benefit of the scope in OAuth2?

In the question, substitute scope with state. Since there is an answer based on the wrong question, I'll let everything below as is. The answer is useful nonetheless. This question refers to ...
2
votes
2answers
219 views

Are these standard OAuth2 flows? (what are their names?)

I'm developing a B2B platform, where other developers (our customers) will build shop-front style apps that leverage our platform. We expose a REST based API which our customers either call directly ...
5
votes
2answers
2k views

Security drawbacks for using short-lived access token in javascript client side

I intend to build a front end site entirely in javascript (NodeJS) and i would like to do ajax calls to a REST WS which is on another domain on client side. I intend to use oauth2 and SSL to secure ...
1
vote
1answer
430 views

Multiple security layers for SOA REST intranet services

For intranet applications that already leverage Active Directory, is there any point or benefit to adding a second layer of security such as OAuth when accessing SOA REST services? We're new to SOA ...
3
votes
2answers
9k views

How to use OAuth with Active Directory

I'm creating a REST WCF service and want to use OAuth to authenticate each user's request. The user accounts are stored in Active Directory so I have access to their AD login name on the client ...
2
votes
1answer
328 views

Tomcat IP restriction vs Two Legged OAuth

We have a server side API that is completely REST based. We are coding to secure them with two legged oAuth type authentication. We are planning to iPhone and Android apps in the future, but for now, ...
11
votes
1answer
2k views

Best way to secure javascript front end/REST back end architecture web site?

I would like to build the following project: public REST API back end which can be accessed by any authenticated client. front end with static files in HTML/CSS/Javascript with Backbone.js jQuery ...
4
votes
2answers
675 views

Is there any drawback of using OAuth “pseudoauthentication” as opposed to OpenID?

I have seen posts that insist that OAuth is an orthogonally different thing from OpenID, because OpenID is about authenticating users, while OAuth is about giving access to certain services to a third ...
16
votes
2answers
1k views

Essential things to think about before outsourcing authentication with OpenID, OAuth, or SAML

It's clear there there is no consistent set of features among any of the popular authentication providers. Below is an attempt to aggregate the similarities and differences I've noticed, but I ...
6
votes
3answers
202 views

Detecting OAuth malicious Implementation

I am wondering how can an end-user detect a maliciously implemented OAuth whether 2-legged or 3-legged. Particularly I am interested in those cases where the consumer requester is maliciously ...