Device files and directories must only be writable by users with a system account or as configured by the vendor.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-924	GEN002280 M6	SV-38017r1_rule	ECCD-1 ECCD-2 ECLP-1	Medium

Description
System device files in writable directories could be modified, removed, or used by an unprivileged user to control system hardware.

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

Details

Check Text ( C-37585r1_chk )
Open a terminal session and enter the following command to verify permissions. find / -perm -2 -a \( -type b -o -type c \) > devicelist Check the permissions on the directories above subdirectories in the devicelist file. If any of the device files or their parent directories are world-writable, except device files specifically intended to be world-writable (such as /dev/null), this is a finding.

Check Text ( C-37585r1_chk )

Open a terminal session and enter the following command to verify permissions.

find / -perm -2 -a \( -type b -o -type c \) > devicelist

Check the permissions on the directories above subdirectories in the devicelist file. If any of the device files or their parent directories are world-writable, except device files specifically intended to be world-writable (such as /dev/null), this is a finding.

Fix Text (F-32827r1_fix)
Open a terminal session and enter the following command to set the mode of the device file. chmod 755