Web App Red Team

Engagement Overview

Between March 1 and March 29, 2024, our security team conducted a comprehensive grey-box penetration test against the PlanMaestro ecosystem. The scope included the APEX AI SaaS platform, the Tools Platform (Next.js/FastAPI), the PDF Generator microservice, and the underlying API infrastructure.

The primary objective was to evaluate the resilience of the ecosystem's access controls, session management, and input validation mechanisms under strict gray-box conditions. We operated with the mindset of an authenticated adversary attempting vertical and horizontal privilege escalation.

Security Posture Assessment

The overall security posture of the PlanMaestro ecosystem is MATURING. The application demonstrates strong baseline security controls, including excellent Next.js security headers (A+ on Mozilla Observatory), solid password hashing implementations, and comprehensive HTTPS enforcement.

However, the assessment revealed significant gaps in Authorization (Access Control) and Session Management, leading directly to the highest severity findings. Specifically, the absence of resource-level authorization checks on certain API endpoints (IDOR vulnerabilities) presents the most immediate risk to data confidentiality and integrity.

Strategic Recommendations

• Implement Centralized Authorization: Move away from endpoint-specific permission checks and implement a centralized authorization matrix (e.g., using middleware or Guards in FastAPI/Next.js) that validates resource ownership on every request.
• Enhance Session Lifecycle Management: Implement absolute session timeouts and ensure all access tokens are invalidated upon logout or password changes to prevent session fixation and token replay attacks.
• Automate Security Scanning: Integrate dynamic application security testing (DAST) into the CI/CD pipeline to catch basic injection and misconfiguration issues prior to deployment.