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The Network File System (NFS) server must be configured to restrict file system access to local hosts.


Overview

Finding ID Version Rule ID IA Controls Severity
V-933 GEN005840 SV-37857r1_rule ECSC-1 Medium
Description
The NFS access option limits user access to the specified level. This assists in protecting exported file systems. If access is not restricted, unauthorized hosts may be able to access the system's NFS exports.
STIG Date
Red Hat Enterprise Linux 5 Security Technical Implementation Guide 2017-03-01

Details

Check Text ( C-37061r1_chk )
Check the permissions on exported NFS file systems.

Procedure:
# exportfs -v

If the exported file systems do not contain the 'rw' or 'ro' options specifying a list of hosts or networks, this is a finding.

Fix Text (F-32328r1_fix)
Edit /etc/exports and add ro and/or rw options (as appropriate) specifying a list of hosts or networks which are permitted access. Re-export the file systems.