Tips for protecting against modifications to scope objects?

As an Angular newbie, I've encountered a scenario where there is an object in the scope that determines the role of the current user (e.g. user.role=REGULAR).

I'm wondering if there's a way to prevent users from using firebug to change user.role=ADMIN?

For instance, I've come across code that displays a tab based on a value in the scope, but unsure how to prevent users from altering that value (and gaining access to the tab). Is there a specific approach to address this issue? Should all access-related functionalities be exclusively fetched from a web service or a protected remote location?

Answer №1

It is imperative to avoid relying on client-side validation. Any design that relies solely on client input for validation presents a significant security risk.

You should always assume that data from the client cannot be trusted. It is crucial to validate and authenticate all information on the server side, especially when dealing with sensitive information.

Remember that once data is sent to the client, it is no longer within your control. It is best to treat all client-side data as potentially compromised and untrustworthy, necessitating thorough checking of everything.

In your scenario, make sure to restrict admin features only to users with appropriate privileges to minimize security vulnerabilities.

Answer №2

One possible way to safeguard the object is by enclosing it within a closure or utilizing Object.freeze in browsers that support this feature. However, it's important to acknowledge the reality that the code ultimately runs on the client side and can be manipulated. Even if there were a flawless method of preventing alterations (which doesn't exist), the client could potentially tamper with the payload before it reaches the browser through tools like Fiddler.

Considering this, it is crucial not to place full reliance on any client-side information for access control or authorization. Validation should always occur on the server to mitigate security vulnerabilities and risks.

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