Preventing Parameter Pollution Using Hpp NPM Package | API Development Course 2023

Preventing Parameter Pollution Using Hpp
Parameter pollution is a type of vulnerability in web applications that occurs when a user is able to manipulate the parameters of a request in a way that can compromise the security or integrity of the application. This can be done through a variety of means, such as manipulating the query string, manipulating hidden form fields, or tampering with cookies.
One way to prevent parameter pollution is to use a HTTP parameter pollution (HPP) filter. An HPP filter is a security measure that checks incoming HTTP requests for potentially malicious parameters and removes or modifies them as needed. This can help to protect the application from attacks that seek to exploit vulnerabilities through parameter manipulation.
To implement an HPP filter, you will need to do the following:
Identify the parameters that need to be protected. These are typically parameters that are used to authenticate users, access sensitive information, or perform critical actions within the application.
Implement a mechanism for detecting potentially malicious parameters. This can be done through a variety of methods, such as regex pattern matching or heuristic analysis.
Remove or modify any detected malicious parameters before they are processed by the application. This can be done by replacing the malicious parameter with a benign value, or by removing the parameter entirely from the request.
Test the HPP filter to ensure that it is effective at detecting and preventing parameter pollution. This can be done through manual testing or by using automated testing tools.
By implementing an HPP filter and regularly testing it for effectiveness, you can help to protect your web application from parameter pollution attacks and ensure the security and integrity of your application.
Preventing Parameter Pollution Using Hpp NPM Package | API Development Course 2023
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[@kimlongnguyen2366]

At last, when i use "sort=price&sort=-ratingAverage", it doesn't sort anything. It properly only show all NFT. How can i fix this?

[@daulathussain]

check the params in the query, may be you have down something wrong try to rewatch