Details

The nosuid mount option specifies that the filesystem cannot contain setuid files.

Rationale:

Setting this option on a file system prevents users from introducing privileged programs onto the system and allowing non-root users to execute them.

Solution

Edit the /etc/fstab file and add nosuid to the fourth field (mounting options) for the /dev/shm partition. See the fstab(5) manual page for more information.
Run the following command to remount /dev/shm :

# mount -o remount,nosuid /dev/shm

Supportive Information

The following resource is also helpful.

• https://workbench.cisecurity.org/files/3148https://workbench.cisecurity.org/files/3148

This security hardening control applies to the following category of controls within NIST 800-53: Configuration Management.This control applies to the following type of system Unix.

References

• 800-53|CM-6
• CSCv6|3.1
• CSCv7|5.1

Source

• Tenable.com/audits