mirror of
https://github.com/ovh/debian-cis.git
synced 2025-08-04 22:31:16 +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
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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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# Ensure system is disabled when audit logs are full (Automated)
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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=4
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# shellcheck disable=2034
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DESCRIPTION="Ensure system is disabled when audit logs are full"
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AUDIT_CONF="/etc/audit/auditd.conf"
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# This function will be called if the script status is on enabled / audit mode
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# shellcheck disable=2120
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audit() {
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local disk_full_action=""
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local disk_error_action=""
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DISK_FULL_ACTION_IS_VALID=0
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DISK_ERROR_ACTION_IS_VALID=0
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# shellcheck disable=2016
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# otherwise $2 will interpreted in awk, this is not what is intended
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disk_full_action=$($SUDO_CMD awk -F '=' '/^[[:space:]]?disk_full_action/ {print $2}' "$AUDIT_CONF" | sed 's/\ //g')
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# shellcheck disable=2016
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disk_error_action=$($SUDO_CMD awk -F '=' '/^[[:space:]]?disk_error_action/ {print $2}' "$AUDIT_CONF" | sed 's/\ //g')
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if [ "$disk_full_action" != "halt" ] && [ "$disk_full_action" != 'single' ]; then
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DISK_FULL_ACTION_IS_VALID=1
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crit "'disk_full_action' is not configured to 'halt' or 'single'"
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warn "The recommendation is to stop the system when the logs disk is full. Make sure to understand the consequences before applying it"
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else
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ok "'disk_full_action' is configured to 'halt' or 'single'"
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fi
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if [ "$disk_error_action" != "halt" ] && [ "$disk_error_action" != 'single' ] && [ "$disk_error_action" != 'syslog' ]; then
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DISK_ERROR_ACTION_IS_VALID=1
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crit "'disk_error_action' is not configured to 'syslog', 'halt' or 'single'"
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warn "The recommendation is to stop the system when there are errors on the logs disk. Make sure to understand the consequences before applying it"
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else
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ok "'disk_error_action' is configured to 'syslog', 'halt' or 'single'"
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fi
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}
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# This function will be called if the script status is on enabled mode
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apply() {
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audit
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if [ "$DISK_FULL_ACTION_IS_VALID" -eq 1 ]; then
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replace_in_file "$AUDIT_CONF" "^[[:space:]]\?disk_full_action" "disk_full_action = halt"
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fi
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if [ "$DISK_ERROR_ACTION_IS_VALID" -eq 1 ]; then
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replace_in_file "$AUDIT_CONF" "^[[:space:]]\?disk_error_action" "disk_error_action = halt"
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fi
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}
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# This function will check config parameters required
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check_config() {
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:
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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# shellcheck source=../../debian/default
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. /etc/default/cis-hardening
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fi
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if [ -z "$CIS_LIB_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_LIB_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 "${CIS_LIB_DIR}"/main.sh ]; then
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# shellcheck source=../../lib/main.sh
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. "${CIS_LIB_DIR}"/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_LIB_DIR in /etc/default/cis-hardening"
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exit 128
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fi
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