CVE-2023-1636

Defines isolation boundaries by specifying which external systems may access or process organization data.

Maintains isolation and compartmentalization by restricting flows between security domains or levels.

Reviewing the continued need for connections supports isolation and compartmentalization.

Locating systems away from hazards improves isolation and compartmentalization from external physical or environmental threats.

The CONOPS must articulate isolation and compartmentalization expectations for security and privacy, making architectural failures in separation of duties or domains harder to overlook.

Security architectures commonly incorporate isolation and compartmentalization strategies to limit the impact of compromises.

Organization-wide privacy program leadership ensures proper isolation and compartmentalization of personal data.

Oversight ensures data-matching activities maintain required isolation between distinct data sets and authorized user communities.

Access control policies establish the boundaries that isolation must enforce.

A.5.18's provisioning, review, SoD enforcement, activation-only-after-authorization, and timely revocation directly stop exploitation of improper isolation/compartmentalization by ensuring privilege boundaries are authorized, segregated, and maintained; bounded remainder is flawed isolation designs that are never granted rights in the first place (pure design flaw, not a rights-management failure).

A.5.3 directly mandates determining and enforcing segregation of conflicting duties/roles (with examples that map to privilege boundaries), which stops improper isolation from being exploitable in most cases; the bounded remainder is small organizations or cases where segregation is impracticable and the clause itself falls back to other controls.

Privileged access rights require strict isolation from ordinary user contexts.

A.8.22's network-domain segregation and perimeter gateways (firewalls) directly enforce isolation between trust/criticality levels, stopping cross-domain exploitation of improper compartmentalization for the bulk of network-based privilege flows; the bounded remainder is non-network resources (e.g. process-level or in-memory compartmentalization inside a single domain).

A.8.27 mandates security-by-design principles including least privilege, defense-in-depth, compartmentalization via zero-trust/never-trust, fail-secure, and explicit analysis of control placement and integration to isolate differing privilege levels; this stops exploitation of most improper-isolation cases but leaves a bounded remainder (e.g. certain legacy or safety-overriding exceptions that must be formally acknowledged).