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Crontab files must be group-owned by root, cron, or the crontab creators primary group.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22385 | GEN003050 | SV-45596r1_rule | Medium |
| Description |
|---|
| To protect the integrity of scheduled system jobs and prevent malicious modification to these jobs, crontab files must be secured. |
| STIG | Date |
|---|---|
| SUSE Linux Enterprise Server v11 for System z | 2016-12-20 |
Details
| Check Text ( C-42954r2_chk ) |
|---|
| Check the group ownership of the crontab files. Procedure: # ls -lL /var/spool/cron /var/spool/cron/tabs # ls -lL /etc/crontab /etc/cron.{d,daily,hourly,monthly,weekly} or # ls -lL /etc/cron*|grep -v deny If the group owner is not root or the crontab owner's primary group, this is a finding. |
| Fix Text (F-38994r2_fix) |
|---|
| Change the group owner of the crontab file to root, cron, or the crontab's primary group. Procedure: # chgrp root [crontab file] |