debian-cis/bin/hardening/1.1.1.6_disable_cramfs.sh

#!/bin/bash

# run-shellcheck
#
# CIS Debian Hardening
#

#
# 1.1.1.6 Disable Mounting of cramfs Filesystems (Not Scored)
#

set -e # One error, it's over
set -u # One variable unset, it's over

HARDENING_LEVEL=2
DESCRIPTION="Disable mounting of cramfs filesystems."

KERNEL_OPTION="CONFIG_CRAMFS"
MODULE_NAME="cramfs"


# This function will be called if the script status is on enabled / audit mode
audit () {
    is_kernel_option_enabled $KERNEL_OPTION $MODULE_NAME
    if [ $FNRET = 0 ]; then # 0 means true in bash, so it IS activated
        crit "$KERNEL_OPTION is enabled!"
    else
        ok "$KERNEL_OPTION is disabled"
    fi
    :
}

# This function will be called if the script status is on enabled mode
apply () {
    is_kernel_option_enabled $KERNEL_OPTION
    if [ $FNRET = 0 ]; then # 0 means true in bash, so it IS activated
        warn "I cannot fix $KERNEL_OPTION enabled, recompile your kernel please"
    else
        ok "$KERNEL_OPTION is disabled, nothing to do"
    fi
    :
}

# This function will check config parameters required
check_config() {
    :
}

# Source Root Dir Parameter
if [ -r /etc/default/cis-hardening ]; then
    . /etc/default/cis-hardening
fi
if [ -z "$CIS_ROOT_DIR" ]; then
     echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
     echo "Cannot source CIS_ROOT_DIR variable, aborting."
    exit 128
fi

# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
if [ -r $CIS_ROOT_DIR/lib/main.sh ]; then
    . $CIS_ROOT_DIR/lib/main.sh
else
    echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_ROOT_DIR in /etc/default/cis-hardening"
    exit 128
fi