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Can OAuth prevent CSRF?
In particular, the use of the OAuth 2.0 implicit grant flow by OneNote and OneDrive prevents this particular CSRF attack by requiring more specific user agent in- teraction that is difficult for an adversary to initiate without the user’s knowledge.
Do you need CSRF with OAuth?
CSRF attack targets Cookies and Basic authentication header in general. Since in my application none of these are being used CSRF protection is not needed. Authentication starts with provided Oauth2 token (No Basic auth) and request’s state is forgotten as soon as response is returned (No session cookie).
How does state prevent CSRF?
The primary reason for using the state parameter is to mitigate CSRF attacks by using a unique and non-guessable value associated with each authentication request about to be initiated. That value allows you to prevent the attack by confirming that the value coming from the response matches the one you sent.
Is CSRF needed for API?
An API pretty much precludes CSRF, because its entire purpose is generally to allow 3rd-party entities to access and manipulate data on your site (the “cross-site” in CSRF). So, yes, I think as a rule any API view should be CSRF exempt.
Is the OAuth2 protocol vulnerable to CSRF attacks?
A system that uses OAuth2 to protect resources and delegate permissions is vulnerable to all “normal” CSRF attacks anyway – users authenticate and probably state can be changed. Here we concentrate on attacks that are specific to the OAuth2 protocol, and in that context the bad guy is going to be trying…
How is CSRF protection implemented in the client?
The Client implements CSRF protection by checking that the state exists in the user’s session when he comes back to get the access token. The state parameter in this design is a key to a session attribute in the authenticated user’s session with the Client application.
What is a cross site request forgery ( CSRF ) attack?
A Cross Site Request Forgery (CSRF or “sea surf”) attack involves a bad guy tricking a user into clicking on a link that changes some state on the target system. If the user is already authenticated with the target system he might not even notice the attack since the browser will send authentication headers or cookies automatically.
What does OAuth2 stand for in web protocol?
OAuth2 is a protocol enabling a Client application, often a web application, to act on behalf of a User, but with the User’s permission.