TMA-ROS1-1.1.1.1

Ensure mounting of cramfs filesystems is disabled

보통레벨 1자동ros

설명

The cramfs filesystem type is a compressed read-only Linux filesystem embedded in small footprint systems. A cramfs image can be used without having to first decompress the image. The audit requires the cramfs 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.

점검 방법

감사 방식: 셸 명령

shell

command -v modprobe >/dev/null 2>&1 || exit 1
grep -qw '^cramfs' /proc/modules 2>/dev/null && { echo 'cramfs is loaded'; exit 1; }
cfg=$(modprobe -n -v cramfs 2>&1)
case "$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+cramfs\s+/bin/(true|false)' && echo compliant || echo 'cramfs can be loaded'

예상 출력: compliant

조치 방법

조치 방식: 가이드 또는 인프라 패치

Edit or create a file in the /etc/modprobe.d/ directory ending in .conf Example: vi /etc/modprobe.d/cramfs.conf and add the following line: install cramfs /bin/true Run the following command to unload the cramfs module: # rmmod cramfs

속성

운영 체제: 모두
태그: rosros1melodicsystem
참고 자료: CIS ROS Melodic Benchmark v1.0.0 - 1.1.1.1 Ensure mounting of cramfs filesystems is disabled

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shell

tmaegis scan --target ros