Detections
Analytics
F5BI-AP-000231 - The F5 BIG-IP appliance must be configured to deny access when revocation data is unavailable using OCSP.
Information
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).Caching of CRL files on BIG-IP is not feasible or possible due to the large sizes of DOD/DISA CRL files. Use the alternate mitigation, configuring the system to deny access when revocation data is unavailable, which is done in the APM VPE.
NOTE: Nessus has provided the target output to assist in reviewing the benchmark to ensure target compliance.
Solution
Update the OCSP Auth.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. Add an 'OCSP Auth' in the Access Profile.
Note: To create an OCSP Responder, go to Access >> Authentication >> OCSP Responder.
6. Ensure the fallback branch goes to a 'Deny' ending.
7. Click 'Apply Access Policy'.
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_F5_BIG-IP_Y25M01_STIG.zip
Item Details
Audit Name: DISA F5 BIG-IP Access Policy Manager STIG v2r4
Category: IDENTIFICATION AND AUTHENTICATION
References: 800-53|IA-5(2)(d), CAT|II, CCI|CCI-001991, Rule-ID|SV-260050r981644_rule, STIG-ID|F5BI-AP-000231, Vuln-ID|V-260050
Plugin: F5
Control ID: f76721631209970fe223d0110c8e33846940bba3297e7ea1bebd8f6f4d0ca22d