Cron and crontab directories must not have extended ACLs.

From SOLARIS 10 X86 SECURITY TECHNICAL IMPLEMENTATION GUIDE

Part of GEN003110

Associated with IA controls: ECLP-1

Associated with: CCI-000225

SV-26538r1_rule Cron and crontab directories must not have extended ACLs.

Vulnerability discussion

To protect the integrity of scheduled system jobs and to prevent malicious modification to these jobs, crontab files must be secured. ACLs on cron and crontab directories may provide unauthorized access to these directories. Unauthorized modifications to these directories or their contents may result in the addition of unauthorized cron jobs or deny service to authorized cron jobs.

Check content

Check the permissions of the crontab directories. # ls -ld /var/spool/cron/crontabs/ If the permissions include a "+", the directory has an extended ACL and this is a finding.

Fix text

Remove the extended ACL from the directory. # chmod A- /var/spool/cron/crontabs/

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