The BIG-IP Core implementation must be configured with a pre-established trust relationship and mechanisms with appropriate authorities (e.g., Active Directory or authentication, authorization, and accounting (AAA) server) that validate user account access authorizations and privileges when providing access control to virtual servers.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-215759	F5BI-LT-000075	SV-215759r557356_rule		Medium

Description
User account and privilege validation must be centralized in order to prevent unauthorized access using changed or revoked privileges. ALGs can implement functions such as traffic filtering, authentication, access, and authorization functions based on computer and user privileges. However, the directory service (e.g., Active Directory or LDAP) must not be installed on the ALG, particularly if the gateway resides on the untrusted zone of the Enclave.

Description

User account and privilege validation must be centralized in order to prevent unauthorized access using changed or revoked privileges. ALGs can implement functions such as traffic filtering, authentication, access, and authorization functions based on computer and user privileges. However, the directory service (e.g., Active Directory or LDAP) must not be installed on the ALG, particularly if the gateway resides on the untrusted zone of the Enclave.

STIG	Date
F5 BIG-IP Local Traffic Manager Security Technical Implementation Guide	2024-01-26

Details

Check Text ( C-16951r291090_chk )
If the BIG-IP Core does not provide user access control intermediary services for virtual servers, this is not applicable. When user access control intermediary services are provided, verify the BIG-IP Core is configured an APM policy with a pre-established trust relationship and mechanisms with appropriate authorities that validate each user access authorization and privileges. Navigate to the BIG-IP System manager >> Local Traffic >> Virtual Servers >> Virtual Servers List tab. Select Virtual Servers(s) from the list to verify. Verify under "Access Policy" section, that "Access Policy" has been set to use an APM access policy that has been configured with a pre-established trust relationship and mechanisms with appropriate authorities that validate each user access authorization and privileges. If the BIG-IP Core is not configured with a pre-established trust relationship and mechanisms with appropriate authorities that validate each user access authorization and privileges, this is a finding.

Check Text ( C-16951r291090_chk )

If the BIG-IP Core does not provide user access control intermediary services for virtual servers, this is not applicable.

When user access control intermediary services are provided, verify the BIG-IP Core is configured an APM policy with a pre-established trust relationship and mechanisms with appropriate authorities that validate each user access authorization and privileges.

Navigate to the BIG-IP System manager >> Local Traffic >> Virtual Servers >> Virtual Servers List tab.

Select Virtual Servers(s) from the list to verify.

Verify under "Access Policy" section, that "Access Policy" has been set to use an APM access policy that has been configured with a pre-established trust relationship and mechanisms with appropriate authorities that validate each user access authorization and privileges.

If the BIG-IP Core is not configured with a pre-established trust relationship and mechanisms with appropriate authorities that validate each user access authorization and privileges, this is a finding.

Fix Text (F-16949r291091_fix)
If user access control intermediary services are provided, configure the BIG-IP Core as follows: Configure a policy in the BIG-IP APM module with a pre-established trust relationship and mechanisms with appropriate authorities that validate each user access authorization and privileges. Apply the APM policy to the applicable Virtual Server(s) in the BIG-IP LTM module to validate user account access authorizations and privileges when providing access control to virtual servers.

Fix Text (F-16949r291091_fix)

If user access control intermediary services are provided, configure the BIG-IP Core as follows:

Configure a policy in the BIG-IP APM module with a pre-established trust relationship and mechanisms with appropriate authorities that validate each user access authorization and privileges.

Apply the APM policy to the applicable Virtual Server(s) in the BIG-IP LTM module to validate user account access authorizations and privileges when providing access control to virtual servers.