The AIX /etc/group file must not have an extended ACL.

The "/etc/group" file contains information regarding groups that are configured on the system. Protection of this file is important for system security.

Check the ACL of the "/etc/group" file: # aclget /etc/group

The above command should yield the following output: * * ACL_type AIXC * attributes: base permissions owner(root): rw- group(security): r-- others: r-- extended permissions disabled

If the extended ACL are not "disabled", this is a finding.

Remove the extended ACL from the "/etc/group" using command: # acledit /etc/group