The cron.allow file must not have an extended ACL.

From MAC OSX 10.6 Workstation Security Technical Implementation Guide

Associated with IA controls: ECLP-1

Associated with: CCI-000225

SV-38105r1_rule The cron.allow file must not have an extended ACL.

Vulnerability discussion

A cron.allow file that is readable and/or writable by other than root could allow potential intruders and malicious users to use the file contents to help discern information, such as who is allowed to execute cron programs, which could be harmful to overall system and network security.

Check content

Open a terminal session and enter the following command to view the ACLs of the cron.allow file. ls -l /private/var/at/cron.allow If the file exists and the permissions include a '+', the file has an extended ACL, this is a finding.

Fix text

Open a terminal session and enter the following command to remove the extended ACLs. chmod -N /private/var/at/cron.allow

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