CVE-2023-21405

Requires detection and response to audit logging failures as an unusual or exceptional condition.

Implements detection of unusual or exceptional conditions followed by safe mode entry, reducing the window for exploitation of unchecked conditions.

Training ensures users perform required checks for unusual or exceptional conditions as part of contingency roles, limiting attacker leverage from skipped validations.

IR testing directly validates checks for unusual or exceptional conditions that could indicate security incidents.

Requires ongoing monitoring of organization-defined metrics and analysis, enabling checks for unusual or exceptional conditions.

Security testing routinely checks for unusual or exceptional inputs/conditions, identifying missing validation steps that flaw remediation then resolves.

Requires detection of unusual conditions followed by a controlled transition to the defined failure state.

MTTF determination forces explicit checks for conditions that precede predictable component failure.

Secure SDLC practices directly require syntactic input validation to prevent malformed data handling.

Logging can record unhandled exceptions but does not prevent the weakness itself.

Monitoring may detect symptoms of unhandled conditions but does not eliminate the root weakness.

A.8.25 mandates secure SDLC practices including secure coding guidelines, security requirements, checkpoints, testing (scans/penetration), and developer training that reach syntactic validation defects, but leaves a bounded remainder (e.g. incomplete enforcement across all parsers, second-order inputs, or outsourced components where assurance is only obtained not enforced).

Application security requirements explicitly call for validation of input syntax.

A.8.27 mandates security engineering principles including data validation/sanitization, distrust external input, security by design, and design reviews against attack patterns, which directly stops syntactic validation flaws from reaching production in most cases; the bounded remainder is incomplete application to outsourced development, legacy code, or post-design changes.

Secure coding standards directly require proper syntactic validation of all inputs.