Book Image

ASP.NET Core 5 Secure Coding Cookbook

By : Roman Canlas
Book Image

ASP.NET Core 5 Secure Coding Cookbook

By: Roman Canlas

Overview of this book

ASP.NET Core developers are often presented with security test results showing the vulnerabilities found in their web apps. While the report may provide some high-level fix suggestions, it does not specify the exact steps that you need to take to resolve or fix weaknesses discovered by these tests. In ASP.NET Secure Coding Cookbook, you’ll start by learning the fundamental concepts of secure coding and then gradually progress to identifying common web app vulnerabilities in code. As you progress, you’ll cover recipes for fixing security misconfigurations in ASP.NET Core web apps. The book further demonstrates how you can resolve different types of Cross-Site Scripting. A dedicated section also takes you through fixing miscellaneous vulnerabilities that are no longer in the OWASP Top 10 list. This book features a recipe-style format, with each recipe containing sample unsecure code that presents the problem and corresponding solutions to eliminate the security bug. You’ll be able to follow along with each step of the exercise and use the accompanying sample ASP.NET Core solution to practice writing secure code. By the end of this book, you’ll be able to identify unsecure code causing different security flaws in ASP.NET Core web apps and you’ll have gained hands-on experience in removing vulnerabilities and security defects from your code.
Table of Contents (15 chapters)

Fixing insufficient protection of data in transit

TLS is a network communication protocol that's used on the web to secure data and achieve privacy through cryptography. Missing or flawed implementations of this secure protocol brings an ASP.NET web application to a massive amount of risk when sensitive data being transmitted between the browser and the web server is unencrypted or potentially intercepted. Enabling TLS is the first step to adequately encrypting data in transit. The succeeding recipes in this chapter will add even more protection.

Not enabling TLS in your ASP.NET Core web application puts your confidential data in transit between the clients and servers at risk. You must ensure that HTTPS has been configured for the best protection.

In this recipe, we will learn how to correctly mitigate the risk of a missing security protocol implementation and support for HTTPS.

Getting ready

To complete the recipes in this chapter, we will need a sample Online Banking...