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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-64399r1_rule | ECLP-1 | Medium |
| Description |
|---|
| To protect the integrity of scheduled system jobs and prevent malicious modification to these jobs, crontab files must be secured. |
| STIG | Date |
|---|---|
| Oracle Linux 5 Security Technical Implementation Guide | 2015-06-05 |
Details
| Check Text ( C-52799r1_chk ) |
|---|
| Check the group ownership of the crontab files. Procedure: # ls -lL /var/spool/cron # ls -lL /etc/cron.d /etc/crontab /etc/cron.daily /etc/cron.hourly /etc/cron.monthly /etc/cron.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-54981r1_fix) |
|---|
| Change the group owner of the crontab file to root, cron, or the crontab's primary group. Procedure: # chgrp root [crontab file] |