The Red Hat Enterprise Linux operating system must use a separate file system for /tmp (or equivalent).

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-204496	RHEL-07-021340	SV-204496r505924_rule		Low

Description
The use of separate file systems for different paths can protect the system from failures resulting from a file system becoming full or failing.

STIG	Date
Red Hat Enterprise Linux 7 Security Technical Implementation Guide	2020-09-03

Details

Check Text ( C-4620r499390_chk )
Verify that a separate file system/partition has been created for "/tmp". Check that a file system/partition has been created for "/tmp" with the following command: # systemctl is-enabled tmp.mount enabled If the "tmp.mount" service is not enabled, check to see if "/tmp" is defined in the fstab with a device and mount point: # grep -i /tmp /etc/fstab UUID=a411dc99-f2a1-4c87-9e05-184977be8539 /tmp ext4 rw,relatime,discard,data=ordered,nosuid,noexec, 0 0 If "tmp.mount" service is not enabled or the "/tmp" directory is not defined in the fstab with a device and mount point, this is a finding.

Check Text ( C-4620r499390_chk )

Verify that a separate file system/partition has been created for "/tmp".

Check that a file system/partition has been created for "/tmp" with the following command:

# systemctl is-enabled tmp.mount
enabled

If the "tmp.mount" service is not enabled, check to see if "/tmp" is defined in the fstab with a device and mount point:

# grep -i /tmp /etc/fstab
UUID=a411dc99-f2a1-4c87-9e05-184977be8539 /tmp ext4 rw,relatime,discard,data=ordered,nosuid,noexec, 0 0

If "tmp.mount" service is not enabled or the "/tmp" directory is not defined in the fstab with a device and mount point, this is a finding.

Fix Text (F-4620r499391_fix)
Start the "tmp.mount" service with the following command: # systemctl enable tmp.mount OR Edit the "/etc/fstab" file and ensure the "/tmp" directory is defined in the fstab with a device and mount point.