Implement CSRF protection for wicket ajax requests by adding the necessary header

Question

Implement CSRF protection for wicket ajax requests by adding the necessary header

I'm currently working on a website created with Apache Wicket and we're looking to enhance its security by implementing CSRF protection. Our goal is to keep it stateless by using a double submit pattern.

For forms, we are planning to include a hidden field that will store the csrf token.

However, we also need to apply this to some GET requests triggered by an AjaxFallbackLink which updates data (even though it's not ideal, changing it isn't an option right now). One approach we're considering is placing the CSRF token in a custom header sent along with the request. Yet, I haven't found a way to intercept the javascript method used by wicketAjaxGet (which seems to only accept a precondition function and a channel function). Any suggestions on how I can achieve this?

Alternatively, would embedding the token in the URL be a viable solution? What potential drawbacks might arise from this approach compared to setting it in the header, given that we're utilizing HTTPS for transmission?

Do you have any other ideas on how we could implement CSRF protection for these Ajax GET requests?

javascript ajax wicket wicket-1.5

Answer 1

Answer №1

To add CSRF protection to your Wicket application, you can utilize the CsrfPreventionRequestCycleListener available in versions 6.x and 7.x. This listener is pre-packaged with Wicket and easy to implement.

Simply add the following code snippet to your application's init-method:


@Override
protected void init()
{
    // ...
    getRequestCycleListeners().add(new CsrfPreventionRequestCycleListener());
    // ...
}

This will automatically check for Origin headers in all requests, including AJAX requests. Make sure to configure the listener according to your needs, specifying which origins you want to allow and any additional settings required.

Answer 2

To add CSRF protection to your Wicket application, you can utilize the CsrfPreventionRequestCycleListener available in versions 6.x and 7.x. This listener is pre-packaged with Wicket and easy to implement.

Simply add the following code snippet to your application's init-method:


@Override
protected void init()
{
    // ...
    getRequestCycleListeners().add(new CsrfPreventionRequestCycleListener());
    // ...
}

This will automatically check for Origin headers in all requests, including AJAX requests. Make sure to configure the listener according to your needs, specifying which origins you want to allow and any additional settings required.

Answer 3

Answer №2

Utilizing Ajax components will result in a stateful Page.

If you are comfortable with having an http session, the most straightforward approach is to utilize CryptoMapper (please note: there are numerous enhancements in Wicket 6.x!).

If your preference is for the page to be stateless, you must implement your own custom token - either as a request header or parameter. Explore wicketstuff-stateless for stateless Ajax components and behaviors.

Answer 4

Utilizing Ajax components will result in a stateful Page.

If you are comfortable with having an http session, the most straightforward approach is to utilize CryptoMapper (please note: there are numerous enhancements in Wicket 6.x!).

If your preference is for the page to be stateless, you must implement your own custom token - either as a request header or parameter. Explore wicketstuff-stateless for stateless Ajax components and behaviors.

Implement CSRF protection for wicket ajax requests by adding the necessary header

Answer №1

Answer №2

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