The Red Hat Enterprise Linux operating system must mount /dev/shm with the nodev option.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-81009	RHEL-07-021022	SV-95721r2_rule		Low

Description
The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

STIG	Date
Red Hat Enterprise Linux 7 Security Technical Implementation Guide	2019-03-08

Details

Check Text ( C-80723r2_chk )
Verify that the "nodev" option is configured for /dev/shm: # cat /etc/fstab | grep /dev/shm tmpfs /dev/shm tmpfs defaults,nodev,nosuid,noexec 0 0 If any results are returned and the "nodev" option is not listed, this is a finding. Verify "/dev/shm" is mounted with the "nodev" option: # mount | grep "/dev/shm" | grep nodev If no results are returned, this is a finding.

Fix Text (F-87843r2_fix)
Configure the system so that /dev/shm is mounted with the "nodev" option.