CVE-2023-30859

TSCM employment uncovers unprotected primary channels that have been physically or technically compromised for surveillance.

Strong authentication directly prevents use of an unprotected admin channel.

Enforcing least-privilege access on the channel mitigates the unprotected primary channel.

Protecting data-in-transit integrity and confidentiality secures the primary channel itself.

Network-level controls that block unauthorized logical access close the unprotected channel.

Privileged access rights directly restrict who can use the primary administrative channel.

A.8.20 directly mandates restricting/filtering network connections (firewalls), segregating channels, hardening devices, disabling vulnerable protocols, authenticating systems, and protecting channels over public/wireless networks, which stops exploitation of an unprotected primary admin channel in most cases; the bounded remainder is product-level channel protections inside an application that are outside network-scope.

A.8.21 mandates identifying/implementing network service security features (authentication, encryption, connection controls, access rules, monitoring) and ensuring providers do the same; this directly protects the primary channel against unauthorized use for most cases of CWE-419, with a bounded remainder (e.g. non-network primary channels or implementation flaws in the mandated features themselves).

Network segregation can isolate the primary channel from untrusted networks.

Cryptography can protect confidentiality and integrity of the primary channel.