SC-23: Session Authenticity

CSF v1.1 References:

PF v1.0 References:


  • Low


  • Moderate
    • SC-23
  • High
    • SC-23

Next Version:

Control Statement

The information system protects the authenticity of communications sessions.

Supplemental Guidance

This control addresses communications protection at the session, versus packet level (e.g., sessions in service-oriented architectures providing web-based services) and establishes grounds for confidence at both ends of communications sessions in ongoing identities of other parties and in the validity of information transmitted. Authenticity protection includes, for example, protecting against man-in-the-middle attacks/session hijacking and the insertion of false information into sessions.

Control Enhancements

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


(Not part of any baseline)

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.

SC-23(5): Allowed Certificate Authorities


(Not part of any baseline)

The information system only allows the use of [Assignment: organization-defined certificate authorities] for verification of the establishment of protected sessions.