How do you implement Owasp CSRFGuard?

How do you implement Owasp CSRFGuard?

Implementing CSRF protection in Java based application using…

1. Step 1: Add Owasp csrfguard dependency.
2. Step 2: Add servlet in web.xml.
3. Step 3: Javascript file for token injection.
4. Step 4: Property file for controlling configuration.
5. Step 5: Token Injection.

What is Owasp CSRFGuard?

OWASP CSRFGuard is a library that implements a variant of the synchronizer token pattern to mitigate the risk of Cross-Site Request Forgery (CSRF) attacks. Any attempt to submit a request to a protected resource without the correct corresponding token is viewed as a CSRF attack in progress and is discarded.

What is Owasp CSRF token?

Cross-Site Request Forgery (CSRF) is a type of attack that occurs when a malicious web site, email, blog, instant message, or program causes a user’s web browser to perform an unwanted action on a trusted site when the user is authenticated.

What is Synchronizer Token pattern?

Synchronizer token pattern (STP) is a technique where a token, secret and unique value for each request, is embedded by the web application in all HTML forms and verified on the server side.

How do CSRF attacks work?

A CSRF attack exploits a vulnerability in a Web application if it cannot differentiate between a request generated by an individual user and a request generated by a user without their consent. An attacker’s aim for carrying out a CSRF attack is to force the user to submit a state-changing request.

How do you implement Synchronizer token pattern?

Let’s understand Synchronizer token pattern with a flow diagram,

1. User sends GET request to a server.
2. Server sets the cookie with session_id, and saving session data with the token.
3. Server returns HTML with a form containing token in a hidden field.
4. User submits form, along with a hidden field.

Do I need CSRF?

On CSRF. So, as a rule of thumb, whenever you use cookies and sessions for requests to validate a user, i.e. to confirm or establish trust in a user, use CSRF protection. Since you want to establish trust in your user when he signs up, the same applies. Unfortunately, CSRF attacks are not limited to only that.