Race Conditions

Race conditions

occur when the security of a code segment depends upon the sequence of events occurring within the system

Time-of-Check (TOC)

is the instance when a system verifies access permissions or other security controls. describes when a value is validated

Time-of-Use (TOU)

is the moment when the system accesses the resource or uses the permission that was granted

The Target of Evaluation (TOE)

refers to the particular component, system, or mechanism being evaluated or tested for potential vulnerabilities

The time‐of‐check‐to‐time‐of‐use (TOCTTOU or TOC/TOU)

is a race condition that occurs when a program checks access permissions too far in advance of a resource request.