AIX /etc/security/mkuser.sys.custom file must not exist unless it is needed for customizing a new user account.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-215169 | AIX7-00-001000 | SV-215169r958362_rule | CCI-000015 | medium |
| Description | ||||
| The "/etc/security/mkuser.sys.custom" is called by "/etc/security/mkuser.sys" to customize the new user account when a new user is created, or a user is logging into the system without a home directory. An improper "/etc/security/mkuser.sys.custom" script increases the risk that non-privileged users may obtain elevated privileges. It must not exist unless it is needed. | ||||
| STIG | Date | |||
| IBM AIX 7.x Security Technical Implementation Guide | 2024-08-16 | |||
Details
Check Text (C-215169r958362_chk)
Check if the "/etc/security/mkuser.sys.custom" file exists:
# ls /etc/security/mkuser.sys.custom
If the above command shows the file exists, this is a finding.
Fix Text (F-16365r293959_fix)
Remove the "/etc/security/mkuser.sys.custom" file using the following command:
# rm /etc/security/mkuser.sys.custom