mirror of
https://github.com/ovh/debian-cis.git
synced 2025-08-04 14:21:15 +02:00
c22ce20f9d
- auditd_logs_full_halt.sh -> 6.3.2.3 - systemd_journal_upload_remote_auth.sh -> 6.2.1.2.2 - sudo_auth_timeout.sh -> 5.2.6 - libpam_modules_is_installed.sh -> 5.3.1.2 - ufw_not_installed_with_nftables.sh -> 4.2.2 - ufw_not_installed_with_iptables.sh -> 4.3.1.3
90 lines
3.1 KiB
Bash
Executable File
90 lines
3.1 KiB
Bash
Executable File
#!/bin/bash
|
|
|
|
# run-shellcheck
|
|
#
|
|
# CIS Debian Hardening
|
|
#
|
|
|
|
#
|
|
# Ensure system is disabled when audit logs are full (Automated)
|
|
#
|
|
|
|
set -e # One error, it's over
|
|
set -u # One variable unset, it's over
|
|
|
|
# shellcheck disable=2034
|
|
HARDENING_LEVEL=4
|
|
# shellcheck disable=2034
|
|
DESCRIPTION="Ensure system is disabled when audit logs are full"
|
|
AUDIT_CONF="/etc/audit/auditd.conf"
|
|
|
|
# This function will be called if the script status is on enabled / audit mode
|
|
# shellcheck disable=2120
|
|
audit() {
|
|
local disk_full_action=""
|
|
local disk_error_action=""
|
|
|
|
DISK_FULL_ACTION_IS_VALID=0
|
|
DISK_ERROR_ACTION_IS_VALID=0
|
|
|
|
# shellcheck disable=2016
|
|
# otherwise $2 will interpreted in awk, this is not what is intended
|
|
disk_full_action=$($SUDO_CMD awk -F '=' '/^[[:space:]]?disk_full_action/ {print $2}' "$AUDIT_CONF" | sed 's/\ //g')
|
|
# shellcheck disable=2016
|
|
disk_error_action=$($SUDO_CMD awk -F '=' '/^[[:space:]]?disk_error_action/ {print $2}' "$AUDIT_CONF" | sed 's/\ //g')
|
|
|
|
if [ "$disk_full_action" != "halt" ] && [ "$disk_full_action" != 'single' ]; then
|
|
DISK_FULL_ACTION_IS_VALID=1
|
|
crit "'disk_full_action' is not configured to 'halt' or 'single'"
|
|
warn "The recommendation is to stop the system when the logs disk is full. Make sure to understand the consequences before applying it"
|
|
else
|
|
ok "'disk_full_action' is configured to 'halt' or 'single'"
|
|
fi
|
|
|
|
if [ "$disk_error_action" != "halt" ] && [ "$disk_error_action" != 'single' ] && [ "$disk_error_action" != 'syslog' ]; then
|
|
DISK_ERROR_ACTION_IS_VALID=1
|
|
crit "'disk_error_action' is not configured to 'syslog', 'halt' or 'single'"
|
|
warn "The recommendation is to stop the system when there are errors on the logs disk. Make sure to understand the consequences before applying it"
|
|
else
|
|
ok "'disk_error_action' is configured to 'syslog', 'halt' or 'single'"
|
|
fi
|
|
|
|
}
|
|
|
|
# This function will be called if the script status is on enabled mode
|
|
apply() {
|
|
audit
|
|
if [ "$DISK_FULL_ACTION_IS_VALID" -eq 1 ]; then
|
|
replace_in_file "$AUDIT_CONF" "^[[:space:]]\?disk_full_action" "disk_full_action = halt"
|
|
fi
|
|
|
|
if [ "$DISK_ERROR_ACTION_IS_VALID" -eq 1 ]; then
|
|
replace_in_file "$AUDIT_CONF" "^[[:space:]]\?disk_error_action" "disk_error_action = halt"
|
|
fi
|
|
}
|
|
|
|
# This function will check config parameters required
|
|
check_config() {
|
|
:
|
|
}
|
|
|
|
# Source Root Dir Parameter
|
|
if [ -r /etc/default/cis-hardening ]; then
|
|
# shellcheck source=../../debian/default
|
|
. /etc/default/cis-hardening
|
|
fi
|
|
if [ -z "$CIS_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
|