ISC2 CISSP Practice Question

The correct answer is Race condition testing. Time-of-check to time-of-use (TOCTOU) vulnerabilities are a type of race condition where a program checks a condition and then acts on that information assuming it's still valid, which can create a security vulnerability if the condition changes between the check and use. Race condition testing specifically focuses on identifying situations where timing differences can lead to security issues by systematically testing for conditions where operations can be interrupted or reordered in ways that expose vulnerabilities.

Static code analysis is incorrect because while static code analysis can identify some potential race conditions, it often struggles with TOCTOU vulnerabilities because these issues depend on runtime timing and execution order that may not be apparent from static analysis alone.

Fuzzing is incorrect because fuzzing focuses on finding input handling vulnerabilities by providing unexpected or malformed inputs. While fuzzing is valuable for many types of security testing, it's not specifically designed to detect timing-based race conditions like TOCTOU issues.

Dependency scanning is incorrect because dependency scanning focuses on identifying known vulnerabilities in third-party libraries and components rather than application logic vulnerabilities like race conditions. It doesn't test the dynamic behavior of code that could lead to TOCTOU issues.