Lab Description

In this lab, you will investigate and exploit vulnerabilities in the OWASP Juice Shop related to insecure error handling and file upload processes. The goal is to uncover how improperly configured application components can expose sensitive system or application information and create opportunities for exploitation.

The first part of the lab focuses on error handling. You will trigger various authentication and application errors to inspect how the system responds. By reviewing the messages returned to the user, you will determine whether excessive internal information, such as stack traces or database errors, is being exposed, which can aid an attacker in crafting more advanced attacks.

The second part dives into the file upload feature, specifically for XML files. You will examine the underlying server-side logic, paying close attention to how the application processes user-uploaded content. By submitting crafted XML payloads, you will test for XXE vulnerabilities, allowing access to local files or environment variables.

What You Will Learn

Program Curriculum

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