SC-23(3): Unique Session Identifiers With Randomization

CSF v1.1 References:

Threats Addressed:


(Not part of any baseline)

Next Version:

Control Statement

The information system generates a unique session identifier for each session with [Assignment: organization-defined randomness requirements] and recognizes only session identifiers that are system-generated.

Supplemental Guidance

This control enhancement curtails the ability of adversaries from reusing previously valid session IDs. Employing the concept of randomness in the generation of unique session identifiers helps to protect against brute-force attacks to determine future session identifiers.