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RHEL 9 must use a separate file system for /var/tmp.


Overview

Finding ID Version Rule ID IA Controls Severity
V-257848 RHEL-09-231035 SV-257848r991589_rule Medium
Description
The "/var/tmp" partition is used as temporary storage by many programs. Placing "/var/tmp" in its own partition enables the setting of more restrictive mount options, which can help protect programs that use it.
STIG Date
Red Hat Enterprise Linux 9 Security Technical Implementation Guide 2024-06-04

Details

Check Text ( C-61589r925529_chk )
Verify that a separate file system/partition has been created for "/var/tmp" with the following command:

$ mount | grep /var/tmp

UUID=c274f65f-c5b5-4379-b017-bee96feb7a34 /var/log xfs noatime 1 2

If a separate entry for "/var/tmp" is not in use, this is a finding.
Fix Text (F-61513r925530_fix)
Migrate the "/var/tmp" path onto a separate file system.