Title

The NFS server must be configured to restrict filesystem access to local hosts. (Cat II impact)

Discussion

The access option limits user access to the specified level. This assists in protecting exported file systems. Otherwise, anybody would be able to mount and use the exported files.

Check Content

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

Edit /etc/dfs/dfstab 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.

Additional Identifiers

Rule ID: SV-28450r1_rule

Vulnerability ID: V-933

Group Title:

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.