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)

Chapter 4: Sensitive Data Exposure

Data protection in transit and at rest is paramount. Ensuring the use of strong transport protocols and web security directives can stop data from being compromised in transit and prevent unintended sensitive data exposure. Utilizing the latest Transport Layer Security (TLS) protocol version in code can help mitigate these vulnerabilities, which are brought about by the implementation flaws in lower versions of TLS, making man-in-the-middle attacks such as POODLE, LogJam, and FREAK difficult to succeed.

This chapter will help you determine if security requirements that adequately protect data in transit and at rest exist in your code. You will also learn about what additional web security mechanisms you can implement in your ASP.NET Core web application to protect you from unwanted data leakage.

In this chapter, we're going to cover the following recipes:

  • Fixing insufficient protection of data in transit
  • Fixing missing HTTP...