Title

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. (Cat II impact)

Discussion

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

Check Content

Check the cron.allow and cron.deny files for the system. # more /etc/cron.d/cron.allow # more /etc/cron.d/cron.deny If a default system account (such as bin, sys, adm, or others) is listed in the cron.allow file, or not listed in the cron.deny file if no cron.allow file exists, this is a finding.

Fix Text

Remove default system accounts (such as bin, sys, adm, or others) from the cron.allow file if it exists, or add those accounts to the cron.deny file.

Additional Identifiers

Rule ID: SV-227745r603266_rule

Vulnerability ID: V-227745

Group Title: SRG-OS-000480

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.