CSRF protection in codeigniter

codeigniter

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CSRF protection

In this article,we will learn how to painlessly protect your CodeIgniter (pre 2.0) application against Cross-Site Request Forgery attacks.

CSRF is an inbuilt feature in codeigniter.To enable csrf protection you have to just need to enable it under the config file. Once it has been enabled all the forms will be secured.

CSRF Token:

Protecting your CodeIgniter application from Cross-site request forgery (CSRF or XSRF) attacks is pretty easy thanks to the built-in support. Once CSRF protection is enabled in the config file, you can use the form helper or custom code to protect your forms and AJAX calls from CSRF. The CodeIgniter framework will automatically protect forms or calls that make POST requests once protection is enabled – here’s how to update your application.

Cross Site Request Forgery token is hash string which includes each form request and its submission.It will check with already generated token in the session.If both the value is matched it will accept your request else it will be declined.Here in codeigniter CSRF value is added in hidden input field and send with post requests.

Enable CSRF protection in codeigniter:

To enable CSRF protection in your CodeIgniter application, edit the application/config/config.php file and look for $config['csrf_protection']. Change the setting to TRUE (if it isn’t already) to enable protection. If you then test a form or AJAX call in your application, the request will fail showing a generic error:

Go to application/config/config.php and check for CSRF Settings.

Use CSRF Token:

The easiest way to update your forms is to use the Form Helper. Load the form helper manually (in your controller) or add it to the application/config/autoload.php file and call echo form_open('login'); (the first parameter is the form action, and the second parameter is an array of attributes):Form Helper:Codeigniter has its own functions and fields to make form and fields.Form can be rendered to view using :

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