The /etc/group file must not have an extended ACL.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22338	GEN001394 M6	SV-38093r1_rule	ECLP-1	Medium

Description
The /etc/group file is critical to system security and must be protected from unauthorized modification. The group file contains a list of system groups and associated information.

STIG	Date
MAC OSX 10.6 Workstation Security Technical Implementation Guide	2013-04-09

Details

Check Text ( C-37632r1_chk )
Open a terminal session and enter the following command to view the /etc/group file extended ACLs. ls -lL /etc/group If the permissions include a '+', the file has an extended ACL, this is a finding.

Fix Text (F-32873r1_fix)
Open a terminal session and enter the following command to remove the extended ACLs. chmod -N /etc/group