AIX system must restrict the ability to switch to the root user to members of a defined group.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-215338 | AIX7-00-003030 | SV-215338r991589_rule | CCI-000366 | medium |
| Description | ||||
| Configuring a supplemental group for users permitted to switch to the root user prevents unauthorized users from accessing the root account, even with knowledge of the root credentials. | ||||
| STIG | Date | |||
| IBM AIX 7.x Security Technical Implementation Guide | 2024-08-16 | |||
Details
Check Text (C-215338r991589_chk)
Examine the "sugroups" of the root user. Generally only users in the adm group should have su to root capacity.
Run the following command:
# lsuser -a sugroups root
root sugroups=system,staff,security
If "sugroups" is blank or "ALL", this is a finding.
Fix Text (F-16534r294466_fix)
Use the "chsec" command to only allow users in the adm group to su to root:
# chsec -f /etc/security/user -s root -a sugroups=adm