CVE-2023-0456

Documented procedures facilitate correct implementation and ongoing management of authorization decisions.

Periodic reviews identify and correct flaws in authorization decisions or enforcement.

Documenting permitted unauthenticated actions prevents missing authorization by making all exceptions explicit and subject to organizational review.

Establishing permitted attributes and values, plus auditing changes, ensures authorization decisions are based on correctly managed policy data.

Explicitly mandates authorizing remote access types before permitting connections, directly mitigating improper authorization.

The control explicitly requires authorization of each wireless access type prior to permitting connections.

Mandating explicit authorization of mobile device connections reduces the risk of improper authorization decisions for system access.

Specifying access authorizations for each account and requiring approvals for account requests enforces proper authorization decisions.

A.5.1 only requires the existence of an overarching policy and topic-specific policies (including on access control); it does not itself perform or enforce any authorization check, so the CWE-285 weakness can still be exploited.

Mapping access rights to information classification and business requirements forces correct enforcement of authorization decisions, blocking the incorrect authorization weakness at the policy and implementation stage.

A.5.18's provisioning, review, revocation and activation steps (incl. owner approval, SoD, timely removal on role/termination change) directly stop exploitation of missing authorization checks by ensuring no actor receives or retains rights to resources they should not access; the bounded remainder is that it cannot stop missing-authorization defects inside the enforcement mechanism itself once rights have been granted (e.g. flawed code that ignores the rights table).

Independent reviewers evaluate whether authorization logic matches policy, thereby reducing the window in which incorrect or missing authorization checks remain in production.

By requiring managers to verify that authorization decisions match policy and to remediate deviations, the control limits the persistence of incorrect or missing authorization checks.

Requiring authorization processes and privilege assignments to be specified during project initiation prevents downstream components from receiving overly broad or incorrect rights that would allow unauthorized actions.