Exploiting Business Logic Vulnerability : High Level Logic

Before moving further please take a look at my previous blog. you can easily understand what are business logic vulnerabilities and how they pose significant risk to web applications.

https://gupta-bless.medium.com/exploiting-business-logic-vulnerability-4f84534d699a

Now moving forward and look on another perspective of business logic vulnerability where user inputs are being used for exploitation

What handling user input is essential?

”User input” are those values or actions for which user interactions are needed such as entering any value from the keyboard, clicking on a button and finally submitting those values.

So we understand that users can enter anything or values that belong to any data type but to maintain application logic we have to restrict the user input by prompting the error message.

So before saving or using any inputs entered by the user developer have to make sure that inputs are properly sanitized and validated. Developers can restrict the input values or reduce the attack surface by implementing restrictions on input fields such as only numbers can be entered in a specific field.