CVE-2023-29450

Review and removal of nonpublic information from publicly accessible systems directly prevents exposure of sensitive data to unauthorized actors.

Documenting information locations and authorized users enables better protection against unauthorized exposure of sensitive data.

Protecting confidentiality of backup information prevents unauthorized exposure of sensitive data stored in backups.

Sanitizing equipment to remove specified information before off-site maintenance prevents exposure of sensitive information to unauthorized actors such as external maintenance personnel.

The media protection policy defines requirements and procedures to prevent unauthorized disclosure or access to sensitive information on media.

Assessing control effectiveness and providing incident communication channels at alternate sites reduces the likelihood of sensitive information exposure to unauthorized actors.

Requiring protection of the program plan from unauthorized disclosure directly reduces exposure of sensitive security program details and control descriptions.

Policies mandate protection of CUI on external systems, directly reducing unauthorized exposure of sensitive information.

Enforcing least-privilege permissions and authorization policies directly prevents unauthorized file/directory exposure.

Data-at-rest protections such as encryption or ACLs reduce the impact of unintended file exposure.

Logical segmentation and access protections stop external parties from reaching files that should remain internal.

Hardened configuration baselines commonly include file-system permission settings that limit external access.

A.5.10 only requires awareness, a topic-specific acceptable-use policy stating expected behaviours/monitoring, and procedures referencing classification and other controls; per the owner's explicit rule on labelling and similar dependency-style clauses, this does not itself prevent exposure (CWE-200) unless access/DLP/etc. act on it.

Requiring the return of all physical and electronic assets plus secure deletion of organizational data from personal devices reduces the chance that sensitive information remains accessible to departing personnel.

A.5.12 only defines and communicates a classification scheme so that protection needs can be understood; per the owner's explicit rule, labeling/classification does not itself prevent exposure and requires other controls (e.g. access enforcement) to act on it.

By requiring classification labels and metadata on all information assets, the control makes it harder for sensitive data to be inadvertently exposed because downstream systems and users can recognize and enforce handling rules based on those labels.

Requiring encryption, access controls, and recipient authentication for transfers directly reduces the chance that sensitive data reaches an unauthorized observer.