feat: add debian12 scripts

ufw_is_installed.sh -> 4.1.1 iptables_persistent_is_not_installed.sh -> 4.1.2 ufw_is_enabled -> 4.1.3 nftables_is_not_installed.sh -> 4.3.1.2 libpam_runtime_is_version -> 5.3.1.1
2025-08-04 14:21:15 +02:00 · 2025-07-28 14:47:41 +02:00
parent 15a59d6b2e
commit c2598e484e
10 changed files with 494 additions and 0 deletions
--- a/bin/hardening/ufw_is_enabled.sh
+++ b/bin/hardening/ufw_is_enabled.sh
@@ -0,0 +1,97 @@
+#!/bin/bash
+
+# run-shellcheck
+#
+# CIS Debian Hardening
+#
+
+#
+# Ensure ufw service is enabled (Automated)
+#
+
+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="Ensure ufw service is enabled (Automated)"
+SERVICE="ufw.service"
+CREATE_SSH_RULE=""
+SSH_RULE="allow proto tcp from any to any port 22"
+
+# This function will be called if the script status is on enabled / audit mode
+audit() {
+    SERVICE_ENABLED=1
+    SERVICE_ACTIVE=1
+
+    is_service_enabled "$SERVICE"
+    if [ "$FNRET" -eq 0 ]; then
+        ok "$SERVICE is enabled"
+        SERVICE_ENABLED=0
+    else
+        crit "$SERVICE is not enabled"
+    fi
+
+    is_service_active "$SERVICE"
+    if [ "$FNRET" -eq 0 ]; then
+        ok "$SERVICE is active"
+        SERVICE_ACTIVE=0
+    else
+        crit "$SERVICE is not active"
+    fi
+}
+
+# This function will be called if the script status is on enabled mode
+apply() {
+    audit
+    if [ "$SERVICE_ENABLED" -ne 0 ]; then
+        manage_service unmask "$SERVICE"
+        manage_service enable "$SERVICE"
+    fi
+
+    if [ "$SERVICE_ACTIVE" -ne 0 ]; then
+        # When running ufw enable or starting ufw via its initscript, ufw will flush its chains.
+        # This is required so ufw can maintain a consistent state, but it may drop existing
+        # connections (eg ssh). ufw does support adding rules before enabling the firewall.
+        if [[ "$CREATE_SSH_RULE" == "true" ]]; then
+            info "we are going to modify ufw rules to ensure ssh stays allowed"
+            ufw "$SSH_RULE"
+        fi
+        manage_service start "$SERVICE"
+    fi
+
+}
+
+create_config() {
+    cat <<EOF
+status=audit
+# Put your custom configuration here
+CREATE_SSH_RULE="true"
+EOF
+}
+
+# This function will check config parameters required
+check_config() {
+    :
+}
+
+# Source Root Dir Parameter
+if [ -r /etc/default/cis-hardening ]; then
+    # shellcheck source=../../debian/default
+    . /etc/default/cis-hardening
+fi
+if [ -z "$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