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V-230307

CAT II (Medium)

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

Rule ID

SV-230307r1155388_rule

STIG

Red Hat Enterprise Linux 8 Security Technical Implementation Guide

Version

V2R7

CCIs

CCI-000366

Discussion

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.

Check Content

Note: If no NFS mounts are configured, this requirement is Not Applicable.

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

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