The nosuid option must be enabled on all NFS client mounts.

From HP-UX 11.31 Security Technical Implementation Guide

Associated with IA controls: ECPA-1

Associated with: CCI-000225

SV-35204r1_rule The nosuid option must be enabled on all NFS client mounts.

Vulnerability discussion

Enabling the nosuid mount option prevents the system from granting owner or group-owner privileges to programs with the suid or sgid bit set. If the system does not restrict this access, users with unprivileged access to the local system may be able to acquire privileged access by executing suid or sgid files located on the mounted NFS file system.

Check content

Check the system for NFS mounts that do not use the nosuid option. # mount -v | grep " type nfs " | grep -v "nosuid" If the mounted file systems do not have the nosuid option, this is a finding.

Fix text

Edit /etc/fstab and add the nosuid option for all NFS file systems. Remount the NFS file systems to make the change take effect.

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