Crontab files must not have extended ACLs.

From AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE

Associated with IA controls: ECLP-1

Associated with: CCI-000225

SV-38782r1_rule Crontab files 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 crontab files may provide unauthorized access to the files.

Check content

Check the permissions of the crontab files. Get a listing of crontab files. # ls /var/spool/cron/crontabs Check all of the crontabs listed for an extended ACL. # aclget / Check if extended permissions are disabled. If extended permissions are not disabled, this is a finding.

Fix text

Remove the extended ACL from the crontab file(s) and disable extended permissions. #acledit /

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