AIX default system accounts (with the exception of root) must not be listed in the cron.allow file or must be included in the cron.deny file, if cron.allow does not exist.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-215192	AIX7-00-001033	SV-215192r991589_rule		Medium

Description

To centralize the management of privileged account crontabs, of the default system accounts, only root may have a crontab.

STIG	Date
IBM AIX 7.x Security Technical Implementation Guide	2024-08-16

Details

Check Text (C-16390r294027_chk)

Check the "cron.allow" and "cron.deny" files for the system using commands:
# more /var/adm/cron/cron.allow
# more /var/adm/cron/cron.deny

If the "cron.allow" file exists and is empty, this is a finding.

If a default system account (such as bin, sys, adm, or lpd) is listed in the "cron.allow" file, or not listed in the "cron.deny" file, this is a finding.

Fix Text (F-16388r294028_fix)

Remove default system accounts (such as bin, sys, adm, or lpd) from the "cron.allow" file, or add those accounts to the "cron.deny" file.