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Check: GEN002990 M6

MACOSX 10.6: GEN002990 M6 (in version v1 r3)

Title

The cron.allow file must not have an extended ACL. (Cat II impact)

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

Additional Identifiers

Rule ID: SV-38105r1_rule

Vulnerability ID: V-22384

Group Title:

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-000225	The organization employs the concept of least privilege, allowing only authorized accesses for users (and processes acting on behalf of users) which are necessary to accomplish assigned tasks in accordance with organizational missions and business functions.

Controls

Controls tied to check. These are derived from the CCIs shown above.

Number	Title
AC-6	Least Privilege