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Check: GEN005900

HP-UX 11.23 STIG: GEN005900 (in version v1 r8)

Title

The nosuid option must be enabled on all NFS client mounts. (Cat II impact)

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.

Additional Identifiers

Rule ID: SV-35204r1_rule

Vulnerability ID: V-936

Group Title: GEN005900

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-000225	The organization employs the concept of least privilege, allowing only authorized accesses for users (and processes acting on behalf of users) which are necessary to accomplish assigned tasks in accordance with organizational missions and business functions.

Controls

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

Number	Title
AC-6	Least Privilege