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All Network File System (NFS) exported system files and system directories must be owned by root.


Overview

Finding ID Version Rule ID IA Controls Severity
V-931 GEN005800 SV-46121r1_rule Medium
Description
Failure to give ownership of sensitive files or directories to root provides the designated owner and possible unauthorized users with the potential to access sensitive information or change system configuration which could weaken the system's security posture.
STIG Date
SUSE Linux Enterprise Server v11 for System z 2016-12-20

Details

Check Text ( C-43378r1_chk )
Check if the nfs-kernel-server package is installed. It contains the exportfs command as well as the nfsserver process itself.

# rpm –q nfs-kernel-server
If the package is not installed, this check does not apply. If it is installed, check for NFS exported file systems.

Procedure:
# cat /etc/exports
For each file system displayed, check the ownership.

# ls -lLa

If the files and directories are not owned by root, this is a finding.
Fix Text (F-39462r1_fix)
Change the ownership of exported file systems not owned by root.

Procedure:
# chown root