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Crontab files must not have extended ACLs.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22386 | GEN003090 M6 | SV-38110r1_rule | ECLP-1 | Medium |
| Description |
|---|
| To protect the integrity of scheduled system jobs and to prevent malicious modification to these jobs, crontab files must be secured. ACLs on crontab files may provide unauthorized access to the files. |
| STIG | Date |
|---|---|
| MAC OSX 10.6 Workstation Security Technical Implementation Guide | 2013-04-09 |
Details
| Check Text ( C-37644r1_chk ) |
|---|
| Open a terminal session and enter the following commands to view the extended ACLs of the crontab file. ls -lL /usr/sbin/cron ls -lL /usr/lib/cron ls -lL /usr/bin/crontab ls -lL /private/var/at/cron.deny If the permissions include a '+', the file has an extended ACL, this is a finding. |
| Fix Text (F-32885r1_fix) |
|---|
| Open a terminal session and enter the following command to remove the extended ACLs. chmod -N |