debian-cis/bin/hardening/5.6_restrict_su.sh

82 lines
2.2 KiB
Bash
Raw Normal View History

#!/bin/bash
# run-shellcheck
#
# CIS Debian Hardening
#
#
# 5.6 Ensure access to the su command is restricted (Scored)
#
set -e # One error, it's over
set -u # One variable unset, it's over
# shellcheck disable=2034
HARDENING_LEVEL=3
# shellcheck disable=2034
DESCRIPTION="Restrict access to su command."
PACKAGE='login'
PATTERN='^auth[[:space:]]*required[[:space:]]*pam_wheel.so'
FILE='/etc/pam.d/su'
# This function will be called if the script status is on enabled / audit mode
audit () {
is_pkg_installed "$PACKAGE"
if [ "$FNRET" != 0 ]; then
2016-04-21 18:32:36 +02:00
crit "$PACKAGE is not installed!"
else
ok "$PACKAGE is installed"
does_pattern_exist_in_file $FILE $PATTERN
if [ "$FNRET" = 0 ]; then
ok "$PATTERN is present in $FILE"
else
crit "$PATTERN is not present in $FILE"
fi
fi
}
# This function will be called if the script status is on enabled mode
apply () {
is_pkg_installed "$PACKAGE"
if [ "$FNRET" = 0 ]; then
ok "$PACKAGE is installed"
else
crit "$PACKAGE is absent, installing it"
apt_install $PACKAGE
fi
does_pattern_exist_in_file $FILE $PATTERN
if [ "$FNRET" = 0 ]; then
ok "$PATTERN is present in $FILE"
else
crit "$PATTERN is not present in $FILE"
add_line_file_before_pattern $FILE "auth required pam_wheel.so" "# Uncomment this if you want wheel members to be able to"
fi
}
# This function will check config parameters required
check_config() {
:
}
# Source Root Dir Parameter
if [ -r /etc/default/cis-hardening ]; then
# shellcheck source=../../debian/default
2016-04-18 17:39:14 +02:00
. /etc/default/cis-hardening
fi
if [ -z "$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