debian-cis/bin/hardening/99.4.0_enable_auditd_kernel.sh
2020-12-22 15:58:10 +01:00

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#!/bin/bash
# run-shellcheck
#
# CIS Debian Hardening
#
#
# 8.0 Ensure CONFIG_AUDIT is enabled in your running kernel
#
set -e # One error, it's over
set -u # One variable unset, it's over
# shellcheck disable=2034
HARDENING_LEVEL=4
# shellcheck disable=2034
DESCRIPTION="Ensure CONFIG_AUDIT is enabled in your running kernel."
# Note : Not part of the CIS guide, but what's the point of configuring software not compatible with your kernel? :)
KERNEL_OPTION="CONFIG_AUDIT"
# This function will be called if the script status is on enabled / audit mode
audit() {
is_kernel_option_enabled "$KERNEL_OPTION"
if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
ok "$KERNEL_OPTION is enabled"
else
crit "$KERNEL_OPTION is disabled, auditd will not work"
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
ok "$KERNEL_OPTION is enabled"
else
warn "I cannot fix $KERNEL_OPTION disabled, to make auditd work, recompile your kernel please"
fi
:
}
# This function will check config parameters required
check_config() {
:
}
# Source Root Dir Parameter
if [ -r /etc/default/cis-hardening ]; then
# shellcheck source=../../debian/default
. /etc/default/cis-hardening
fi
if [ -z "$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 "$CIS_ROOT_DIR"/lib/main.sh ]; then
# shellcheck source=../../lib/main.sh
. "$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