Check: GEN005900
Solaris 9 X86 STIG:
GEN005900
(in version v1 r9)
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 setuid or setgid 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 setuid or setgid files located on the mounted NFS file system.
Check Content
Check the system for NFS mounts not using the nosuid option. Procedure: # mount -v | grep " type nfs " | grep -v nosetuid OR # grep nfs /etc/mnttab | grep -v nosuid | grep -v :vold If the mounted file systems do not have the nosetuid/nosuid option, this is a finding. NOTE: Mount options for the volume management daemon (vold) are controlled by the /etc/rmmount.conf file.
Fix Text
Edit /etc/vfstab 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-28452r1_rule
Vulnerability ID: V-936
Group Title:
Expert Comments
CCIs
| 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
| Number | Title |
|---|---|
| AC-6 |
Least Privilege |