debian-cis/bin/hardening/1.1.20_removable_device_noexec.sh
2020-12-22 17:01:41 +01:00

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#!/bin/bash
# run-shellcheck
#
# CIS Debian Hardening
#
#
# 1.1.20 Ensure noexec option set on removable media partition (Not 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="noexec option for removable media partitions."
# Fair warning, it only checks /media.* like partition in fstab, it's not exhaustive
# Quick factoring as many script use the same logic
PARTITION="/media\S*"
OPTION="noexec"
# This function will be called if the script status is on enabled / audit mode
audit() {
info "Verifying if there is $PARTITION like partition"
FNRET=0
is_a_partition "$PARTITION"
if [ "$FNRET" -gt 0 ]; then
ok "There is no partition like $PARTITION"
FNRET=0
else
info "detected $PARTITION like"
has_mount_option "$PARTITION" "$OPTION"
if [ "$FNRET" -gt 0 ]; then
crit "$PARTITION has no option $OPTION in fstab!"
FNRET=1
else
ok "$PARTITION has $OPTION in fstab"
fi
fi
}
# This function will be called if the script status is on enabled mode
apply() {
if [ "$FNRET" = 0 ]; then
ok "$PARTITION is correctly set"
elif [ "$FNRET" = 1 ]; then
info "Adding $OPTION to fstab"
add_option_to_fstab "$PARTITION" "$OPTION"
fi
}
# This function will check config parameters required
check_config() {
# No param for this script
:
}
# Source Root Dir Parameter
if [ -r /etc/default/cis-hardening ]; then
# shellcheck source=../../debian/default
. /etc/default/cis-hardening
fi
if [ -z "$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