Title

The VPN Gateway must implement a local cache of revocation data to support path discovery and validation in case of the inability to access revocation information via the network. (Cat II impact)

Discussion

Without configuring a local cache of revocation data, there is the potential to allow access to users who are no longer authorized (users with revoked certificates). This requirement only applies to components where this is specific to the function of the device or has the concept of a user (e.g., VPN or proxy capability). This does not apply to authentication for the purpose of configuring the device itself (i.e., device management).

Check Content

If the VPN does not provide PKI-based user authentication intermediary services, this is not applicable. Verify the VPN implements a local cache of revocation data to support path discovery and validation in case of the inability to access revocation information via the network. If the VPN does not implement a local cache of revocation data to support path discovery and validation in case of the inability to access revocation information via the network, this is a finding.

Fix Text

If PKI-based user authentication intermediary services are provided, configure the VPN to implement a local cache of revocation data to support path discovery and validation in case of the inability to access revocation information via the network.

Additional Identifiers

Rule ID: SV-264331r984329_rule

Vulnerability ID: V-264331

Group Title: SRG-NET-000345

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.