After experiencing a web application attack, HealthFirst, a health records management company, traced the breach...

An IDOR vulnerability is fundamentally an authorization failure. It occurs when an application exposes identifiers for resources and fails to verify whether the authenticated user is actually authorized to access the requested object. The primary remediation is therefore to enforce server-side access-control checks for every sensitive resource. Among the available choices, implementing RBAC provides the appropriate authorization mechanism by limiting access according to defined roles and privileges. In practice, object-level authorization must also be enforced on every request rather than trusting identifiers supplied by users. A WAF may provide supplementary protection but cannot reliably correct flawed application authorization logic. Penetration testing is useful for finding and validating vulnerabilities but is not the actual remediation. Encryption protects information confidentiality but does not prevent an authenticated user from requesting another user ' s object.

================