RHEL 8 must prevent special devices on file systems that are imported via Network File System (NFS).

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-230307	RHEL-08-010640	SV-230307r1017117_rule		Medium

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 8 Security Technical Implementation Guide	2024-11-25

Details

Check Text (C-32976r567667_chk)

Verify file systems that are being NFS-imported are mounted with the "nodev" option with the following command:

$ sudo grep nfs /etc/fstab | grep nodev

UUID=e06097bb-cfcd-437b-9e4d-a691f5662a7d /store nfs rw,nosuid,nodev,noexec 0 0

If a file system found in "/etc/fstab" refers to NFS and it does not have the "nodev" option set, this is a finding.

Fix Text (F-32951r567668_fix)

Configure the "/etc/fstab" to use the "nodev" option on file systems that are being imported via NFS.