Course 1 - BurpSuite Bug Bounty Web Hacking from Scratch | Episode 6: Broken Authentication and Session Management: Exploits and Defenses

In this lesson, you’ll learn about:Broken Authentication and Session Management (BASM):A critical OWASP Top 10 vulnerability that arises from poor handling of user authentication and session controls.Common causes include developer negligence and insecure practices that allow attackers to hijack or reuse valid sessions.Key causes and developer mistakes:Exposing session IDs in the URL.Failing to implement proper session timeouts.Reusing the same session ID before and after login.Storing or transmitting session cookies insecurely, making them vulnerable to theft (e.g., via XSS).Common exploitation methods:Brute Force Attacks:Attackers use automated tools (like Burp Suite Intruder in cluster bomb mode) to guess valid username-password pairs.Exploits weak password policies or lack of rate-limiting.SQL Injection Login Bypass:Attackers inject malicious SQL payloads (e.g., 1=1, ' OR '1'='1) into login fields.The server interprets the input as a valid condition, granting unauthorized access without valid credentials.Prevention and mitigation strategies:Implement Multi-Factor Authentication (MFA): Adds an extra verification layer against stolen or brute-forced credentials.Enforce strong password policies: Disallow weak or default credentials; check against known password breach lists.Prevent account enumeration: Use identical messages for login, registration, and recovery outcomes.Limit failed login attempts: Apply lockouts, rate limits, and alert administrators of repeated failures.Use secure session management:Generate new random session IDs after login (high entropy).Avoid placing session IDs in URLs.Invalidate sessions on logout or inactivity.Store session data securely on the server side.Core takeaway:Understanding BASM helps identify how insecure session handling and weak authentication mechanisms can compromise entire systems. Applying layered defenses ensures both authentication robustness and session integrity.You can listen and download our episodes for free on more than 10 different platforms:https://linktr.ee/cybercode_academy