debian-cis/bin/hardening/5.2.1_sshd_conf_perm_ownership.sh
P-EB 32886d3a3d
Replace CIS_ROOT_DIR by a more flexible system (#204)
* Replace CIS_ROOT_DIR by a more flexible system

* Try to adapt the logic change to the functional tests
2023-09-25 14:24:01 +02:00

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#!/bin/bash
# run-shellcheck
#
# CIS Debian Hardening
#
#
# 5.2.1 Ensure permissions on /etc/ssh/sshd_config are configured (Scored)
#
set -e # One error, it's over
set -u # One variable unset, it's over
# shellcheck disable=2034
HARDENING_LEVEL=1
# shellcheck disable=2034
DESCRIPTION="Checking permissions and ownership to root 600 for sshd_config."
PACKAGE='openssh-server'
FILE='/etc/ssh/sshd_config'
PERMISSIONS='600'
USER='root'
GROUP='root'
# This function will be called if the script status is on enabled / audit mode
audit() {
is_pkg_installed "$PACKAGE"
if [ "$FNRET" != 0 ]; then
ok "$PACKAGE is not installed!"
else
has_file_correct_ownership "$FILE" "$USER" "$GROUP"
if [ "$FNRET" = 0 ]; then
ok "$FILE has correct ownership"
else
crit "$FILE ownership was not set to $USER:$GROUP"
fi
has_file_correct_permissions "$FILE" "$PERMISSIONS"
if [ "$FNRET" = 0 ]; then
ok "$FILE has correct permissions"
else
crit "$FILE permissions were not set to $PERMISSIONS"
fi
fi
}
# This function will be called if the script status is on enabled mode
apply() {
is_pkg_installed "$PACKAGE"
if [ "$FNRET" != 0 ]; then
ok "$PACKAGE is not installed"
else
does_file_exist "$FILE"
if [ "$FNRET" != 0 ]; then
info "$FILE does not exist"
touch "$FILE"
fi
has_file_correct_ownership "$FILE" "$USER" "$GROUP"
if [ "$FNRET" = 0 ]; then
ok "$FILE has correct ownership"
else
warn "fixing $FILE ownership to $USER:$GROUP"
chown "$USER":"$GROUP" "$FILE"
fi
has_file_correct_permissions "$FILE" "$PERMISSIONS"
if [ "$FNRET" = 0 ]; then
ok "$FILE has correct permissions"
else
info "fixing $FILE permissions to $PERMISSIONS"
chmod 0"$PERMISSIONS" "$FILE"
fi
fi
}
# This function will check config parameters required
check_config() {
does_user_exist "$USER"
if [ "$FNRET" != 0 ]; then
crit "$USER does not exist"
exit 128
fi
does_group_exist "$GROUP"
if [ "$FNRET" != 0 ]; then
crit "$GROUP does not exist"
exit 128
fi
}
# Source Root Dir Parameter
if [ -r /etc/default/cis-hardening ]; then
# shellcheck source=../../debian/default
. /etc/default/cis-hardening
fi
if [ -z "$CIS_LIB_DIR" ]; then
echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
echo "Cannot source CIS_LIB_DIR variable, aborting."
exit 128
fi
# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
if [ -r "${CIS_LIB_DIR}"/main.sh ]; then
# shellcheck source=../../lib/main.sh
. "${CIS_LIB_DIR}"/main.sh
else
echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_LIB_DIR in /etc/default/cis-hardening"
exit 128
fi