Detections
Analytics

F5BI-AP-000233 - The F5 BIG-IP appliance must configure OCSP to ensure revoked machine credentials are prohibited from establishing an allowed session.

Information

A certificate's certification path is the path from the end entity certificate to a trusted root certification authority (CA). Certification path validation is necessary for a relying party to make an informed decision regarding acceptance of an end entity certificate.

Certification path validation includes checks such as certificate issuer trust, time validity, and revocation status for each certificate in the certification path. Revocation status information for CA and subject certificates in a certification path is commonly provided via certificate revocation lists (CRLs) or online certificate status protocol (OCSP) responses.

NOTE: Nessus has provided the target output to assist in reviewing the benchmark to ensure target compliance.

Solution

If the Access Profile is configured to pull a machine cert using the 'Machine Cert Auth' object in the policy, perform the following actions. Note that pulling a Machine Cert requires the use of the APM Edge Client installed on the client.

To add OCSP machine certificate verification to an access policy:

From the BIG-IP GUI:
1. Access.
2. Profiles/Policies.
3. Access Profiles.
4. Click 'Edit' under 'Per-Session Policy' for the Access Profile.
5. Click the '+' icon on the Successful branch of the Machine Cert Auth object.
6. 'Authentication' tab.
7. Select OCSP Auth.
8. Click 'Add Item'.
9. From the OCSP Responder list, select an OCSP responder.
Note: To create an OCSP Responder. go to Access >> Authentication >> OCSP Responder.
10. From the Certificate Type list, select 'Machine'.
11. Click 'Save'.
12. Click 'Apply Access Policy'.

To add CRLDP certificate verification to an access policy:

From the BIG-IP GUI:
1. Access.
2. Profiles/Policies.
3. Access Profiles.
4. Click 'Edit' under 'Per-Session Policy' for the Access Profile.
5. Click the '+' icon on the Successful branch of the Machine Cert Auth object.
6. 'Authentication' tab.
7. Select CRLDP Auth.
8. Click 'Add Item'.
9. Select an item from the CRLDP Server list.
Note: To create a CRLDP Server, go to Access >> Authentication >> CRLDP.
10. Click 'Save'.
11. Click 'Apply Access Policy'.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_F5_BIG-IP_Y24M01_STIG.zip

Item Details

Category: IDENTIFICATION AND AUTHENTICATION

References: 800-53|IA-5(2)(a), CAT|II, CCI|CCI-000185, Rule-ID|SV-260052r947419_rule, STIG-ID|F5BI-AP-000233, Vuln-ID|V-260052

Plugin: F5

Control ID: 0428d7a0b13bb52ca75610171c2191fdbe8778280c8daf46dd74cbb9f4251c6f