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https://github.com/ovh/debian-cis.git
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102 lines
3.3 KiB
Bash
Executable File
102 lines
3.3 KiB
Bash
Executable File
#!/bin/bash
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# run-shellcheck
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#
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# CIS Debian Hardening
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#
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#
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# 2.2.1.2 Ensure ntp is configured (Scored)
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#
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set -e # One error, it's over
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set -u # One variable unset, it's over
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# shellcheck disable=2034
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HARDENING_LEVEL=3
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# shellcheck disable=2034
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DESCRIPTION="Configure Network Time Protocol (ntp). Check restrict parameters and ntp daemon runs ad unprivileged user."
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# shellcheck disable=2034
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HARDENING_EXCEPTION=ntp
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PACKAGE='ntp'
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NTP_CONF_DEFAULT_PATTERN='^restrict -4 default (kod nomodify notrap nopeer noquery|ignore)'
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NTP_CONF_FILE='/etc/ntp.conf'
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NTP_INIT_PATTERN='RUNASUSER=ntp'
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NTP_INIT_FILE='/etc/init.d/ntp'
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# This function will be called if the script status is on enabled / audit mode
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audit() {
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is_pkg_installed "$PACKAGE"
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if [ "$FNRET" != 0 ]; then
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crit "$PACKAGE is not installed!"
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else
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ok "$PACKAGE is installed, checking configuration"
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does_pattern_exist_in_file "$NTP_CONF_FILE" "$NTP_CONF_DEFAULT_PATTERN"
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if [ "$FNRET" != 0 ]; then
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crit "$NTP_CONF_DEFAULT_PATTERN not found in $NTP_CONF_FILE"
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else
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ok "$NTP_CONF_DEFAULT_PATTERN found in $NTP_CONF_FILE"
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fi
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does_pattern_exist_in_file "$NTP_INIT_FILE" "^$NTP_INIT_PATTERN"
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if [ "$FNRET" != 0 ]; then
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crit "$NTP_INIT_PATTERN not found in $NTP_INIT_FILE"
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else
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ok "$NTP_INIT_PATTERN found in $NTP_INIT_FILE"
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fi
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fi
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}
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# This function will be called if the script status is on enabled mode
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apply() {
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is_pkg_installed "$PACKAGE"
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if [ "$FNRET" = 0 ]; then
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ok "$PACKAGE is installed"
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else
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crit "$PACKAGE is absent, installing it"
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apt_install "$PACKAGE"
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info "Checking $PACKAGE configuration"
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fi
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does_pattern_exist_in_file "$NTP_CONF_FILE" "$NTP_CONF_DEFAULT_PATTERN"
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if [ "$FNRET" != 0 ]; then
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warn "$NTP_CONF_DEFAULT_PATTERN not found in $NTP_CONF_FILE, adding it"
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backup_file $NTP_CONF_FILE
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add_end_of_file $NTP_CONF_FILE "restrict -4 default kod notrap nomodify nopeer noquery"
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else
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ok "$NTP_CONF_DEFAULT_PATTERN found in $NTP_CONF_FILE"
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fi
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does_pattern_exist_in_file $NTP_INIT_FILE "^$NTP_INIT_PATTERN"
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if [ "$FNRET" != 0 ]; then
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warn "$NTP_INIT_PATTERN not found in $NTP_INIT_FILE, adding it"
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backup_file $NTP_INIT_FILE
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add_line_file_before_pattern $NTP_INIT_FILE $NTP_INIT_PATTERN "^UGID"
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else
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ok "$NTP_INIT_PATTERN found in $NTP_INIT_FILE"
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fi
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}
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# This function will check config parameters required
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check_config() {
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:
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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# shellcheck source=../../debian/default
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. /etc/default/cis-hardening
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fi
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if [ -z "$CIS_ROOT_DIR" ]; then
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echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
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echo "Cannot source CIS_ROOT_DIR variable, aborting."
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exit 128
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fi
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# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
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if [ -r "$CIS_ROOT_DIR"/lib/main.sh ]; then
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# shellcheck source=../../lib/main.sh
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. "$CIS_ROOT_DIR"/lib/main.sh
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else
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echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_ROOT_DIR in /etc/default/cis-hardening"
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exit 128
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fi
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