debian-cis/bin/hardening/1.1.1.3_disable_hfs.sh
Jan Schmidle 8f855ac159
fix: kernel module detection (#129)
* fix: add filter to hfs

* fix is_kernel_option_enabled check

as the module in question could have dependencies which have been blacklisted as well we need to make sure that the comparison only checks for the module in question - the last line in the output.

Co-authored-by: GoldenKiwi <thibault.dewailly@corp.ovh.com>
2021-10-20 14:51:29 +02:00

77 lines
2.5 KiB
Bash
Executable File

#!/bin/bash
# run-shellcheck
#
# CIS Debian Hardening
#
#
# 1.1.1.3 Ensure mounting of hfs filesystems is disabled (Scored)
#
set -e # One error, it's over
set -u # One variable unset, it's over
# shellcheck disable=2034
HARDENING_LEVEL=2
# shellcheck disable=2034
DESCRIPTION="Disable mounting of hfs filesystems."
KERNEL_OPTION="CONFIG_HFS_FS"
MODULE_NAME="hfs"
# This function will be called if the script status is on enabled / audit mode
audit() {
if [ "$IS_CONTAINER" -eq 1 ]; then
# In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
ok "Container detected, consider host enforcing or disable this check!"
else
is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME" "($MODULE_NAME|install)"
if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
crit "$MODULE_NAME is enabled!"
else
ok "$MODULE_NAME is disabled"
fi
fi
}
# This function will be called if the script status is on enabled mode
apply() {
if [ "$IS_CONTAINER" -eq 1 ]; then
# In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
ok "Container detected, consider host enforcing!"
else
is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME" "($MODULE_NAME|install)"
if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
warn "I cannot fix $MODULE_NAME, recompile your kernel or blacklist module $MODULE_NAME (/etc/modprobe.d/blacklist.conf : +install $MODULE_NAME /bin/true)"
else
ok "$MODULE_NAME is disabled"
fi
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