CVE-2023-21440

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

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

The control's documentation requirement reduces improper authorization by ensuring only mission-justified actions bypass authentication.

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.

Supply-chain program directly governs inclusion of third-party executable code.

Contractual requirements can mandate trusted sources and integrity checks for included functionality.

Supplier risk assessment explicitly covers risks from their products and libraries.

Software inventory enables tracking of externally sourced components but does not itself enforce trust.

Pre-acquisition integrity/authenticity checks directly prevent inclusion of untrusted code.

Critical-supplier assessment reduces risk of importing executable functionality from untrusted parties.

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.