Details

The `hfs` filesystem type is a hierarchical filesystem that allows you to mount Mac OS filesystems.

Removing support for unneeded filesystem types reduces the local attack surface of the system. If this filesystem type is not needed, disable it.

Solution

Edit or create the file `/etc/modprobe.d/CIS.conf` and add the following line:
“`
install hfs /bin/true
“`
Run the following command to unload the `hfs` module:
“`
# rmmod hfs
“`

Supportive Information

The following resource is also helpful.

• https://workbench.cisecurity.org/files/1863

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-7b.
• CSCv6|13

Source

• Tenable.com/audits