Table of Contents

1. Challenge

   Getting Started in the Lab Environment

   Here are the initial instructions and explanation of the lab environment. Read this while your environment is busy creating itself from nothing. Yes, this violates physics; we know. How fun!

2. Challenge

   Understanding Session Management Vulnerabilities in Java

   In this challenge, you will learn about Java deserialization vulnerabilities in web applications. You'll review vulnerable code snippets and understand how attackers can exploit the standard ObjectInputStream to execute malicious code on a server.

3. Challenge

   Understanding Cookie Security and Safe Deserialization Approaches

   In this challenge, you'll learn about cookie security attributes and their importance in preventing web attacks. You'll explore how the HttpOnly, Secure, and SameSite attributes help protect against XSS, network sniffing, and CSRF attacks, respectively.

4. Challenge

   Implementing Secure Deserialization

   In this challenge, you will implement secure deserialization using ValidatingObjectInputStream. You'll modify vulnerable code to define a whitelist of trusted classes that can be safely deserialized, preventing potential remote code execution attacks.

5. Challenge

   Configuring Secure Session Cookies

   In this challenge, you will configure secure session cookies by implementing the HttpOnly, Secure, and SameSite attributes. You'll modify cookie settings to protect against common web security vulnerabilities that could compromise user sessions.

6. Challenge

   Knowledge Check for Secure Session Management in Java

   In this challenge, you will test your understanding of secure session management principles through assessment questions. You'll demonstrate knowledge of deserialization security, cookie attributes, and best practices for protecting web applications.