TMA-ROS1-1.1.1.2
Ensure mounting of freevxfs filesystems is disabled
MediumLevel 1Automatedros
Description
The freevxfs filesystem type is a free version of the Veritas type filesystem. This is the primary filesystem type for HP-UX operating systems. The audit requires the freevxfs module to be unloaded and blocked (modprobe -n -v reports install /bin/true). Host-level control from the CIS ROS Melodic benchmark (Ubuntu 18.04 robot hosts); run as root.
How it is checked
Audit method: Shell command
shell
command -v modprobe >/dev/null 2>&1 || exit 1
grep -qw '^freevxfs' /proc/modules 2>/dev/null && { echo 'freevxfs is loaded'; exit 1; }
cfg=$(modprobe -n -v freevxfs 2>&1)
case "$cfg" in *'install /bin/true'*|*'install /bin/false'*|*'not found'*) echo compliant; exit 0 ;; esac
modprobe --showconfig 2>/dev/null | grep -Eq '^\s*install\s+freevxfs\s+/bin/(true|false)' && echo compliant || echo 'freevxfs can be loaded'- Expected output
compliant
How it is fixed
Fix method: Guidance or infrastructure patch
Edit or create a file in the /etc/modprobe.d/ directory ending in .conf Example: vi /etc/modprobe.d/freevxfs.conf and add the following line: install freevxfs /bin/true Run the following command to unload the freevxfs module: rmmod freevxfs
Properties
- Operating systems
- Any
- Tags
- rosros1melodicsystem
- Reference
- CIS ROS Melodic Benchmark v1.0.0 - 1.1.1.2 Ensure mounting of freevxfs filesystems is disabled
Check this host
Run this on a machine you are allowed to audit. The scan is read-only.
shell
tmaegis scan --target ros