The F5 BIG-IP appliance must terminate shared/group account credentials when members leave the group.

A shared/group account credential is a shared form of authentication that allows multiple individuals to access the network device using a single account. If shared/group account credentials are not terminated when individuals leave the group, the user that left the group can still gain access even though they are no longer authorized. There may also be instances when specific user actions need to be performed on the network device without unique administrator identification or authentication. Examples of credentials include passwords and group membership certificates.

From the BIG-IP GUI: 1. System. 2. Users. 3. User List.

From the BIG-IP console, type the following command:

tmsh list auth user

If there are any shared accounts that must not be active, this is a finding.

From the BIG-IP GUI: 1. System. 2. Users. 3. User List. 4. Check the box next to any shared/group accounts that must not be active. 5. Click "Delete". 6. Click "Delete" again on the next page.

From the BIG-IP console, type the following command:

tmsh delete auth user <username> tmsh save sys config