Secure user management

Prerequisites & Requirements

• JavaScript/Node.js - Understanding Express.js web applications and server-side JavaScript
• ORM (Object-Relational Mapping) - Specifically Sequelize.js framework and its security implications
• SQL Injection - Traditional SQL injection techniques and their adaptation to ORM contexts
• Database Security - Understanding of SQLite database structures and query mechanics
• Web API Security - RESTful API security testing and authentication mechanisms
• HTTP Protocol - Request manipulation, parameter injection, and header manipulation
• JWT Tokens - Authentication mechanisms in modern web applications
• Privilege Escalation - Understanding how low-privilege users can exploit vulnerabilities to access sensitive data

What will you learn?

• ORM Injection vulnerabilities - How ORM frameworks can be vulnerable to injection attacks despite abstraction layers
• Sequelize.literal() dangers - The security risks of using raw SQL in ORM contexts and bypassing built-in protections
• Parameterized queries - The critical difference between safe and unsafe database query construction
• Input validation techniques - Proper sanitization, whitelisting, and validation approaches for user input
• Secure coding practices - Best practices for ORM usage in production applications
• Vulnerability assessment - How to systematically identify and exploit ORM injection flaws
• Privilege escalation - How regular users can exploit vulnerabilities to access administrative data
• Patch validation - Verifying that security fixes properly address vulnerabilities without introducing regressions

Tools

• Burp Suite / OWASP ZAP - Web application security testing
• curl / Postman - HTTP request manipulation and API testing
• Node.js / npm - Running and analyzing the vulnerable application
• Code editor - Source code analysis and vulnerability identification