Question

A code review of a web application discovered that the application is not performing boundary checking. What should the web developer add to this application to resolve this issue?

Answer 1

The web developer needs to add input validation to the web application to ensure data is within the defined boundaries. They should set limits on input size and type, use sanitization techniques, and implement error handling for robust security.

Step-by-step explanation:

The web developer should add input validation to the web application to resolve the issue of not performing boundary checking. Input validation is a technique used to ensure that the data entered into an application meets specific criteria, including length, type, and range, before being processed. To implement boundary checking, the developer should establish limits on the size and type of input accepted and check all input against these limits before using it within the application.

Additionally, for further security, the developer could utilize sanitization to remove or replace any potentially harmful data. The use of libraries or frameworks that provide input validation and sanitization functions can make this process more efficient and reliable. Lastly, implementing error-handling mechanisms to gracefully deal with unexpected or out-of-bound input is crucial to maintain the integrity of the application.