# RBAC Engine Security Verification

## Verification Date
2025-05-05

## Scope
Review of security/rbac_engine.py against security baseline requirements (SYM-SEC-004)

## Admin Role Verification
- **Permissions**: Confirmed admin has 'delegate', 'audit', 'configure' permissions (line 160)
- **Boundary**: Admin role has GLOBAL boundary (line 31)
- **Inheritance**: Properly inherits all other roles (line 44)

## Privilege Escalation Prevention
- **Circular Inheritance**: validate_circular_inheritance() prevents loops (lines 49-90)
- **Boundary Hierarchy**: validate_boundary() enforces proper role hierarchy (lines 92-132)
- **Domain Restrictions**: Admin role restricted to example.com domain (line 197)

## Operation-Level Controls
- **check_permission()**: Validates:
  - User role assignment (lines 321-326)
  - Boundary restrictions (lines 337-353)
  - Specific resource/action permissions (lines 355-367)

## Findings
✅ All security baseline requirements met
✅ No privilege escalation vulnerabilities found
✅ Operation-level controls properly implemented

## Recommendations
- Consider adding rate limiting for role assignment attempts
- Add monitoring for admin permission usage