From 3c64cd6a7a2e93b4b58d37e3281adfd47733bdc6 Mon Sep 17 00:00:00 2001
From: Samson-W <sccxboy@gmail.com>
Date: Wed, 14 Nov 2018 03:33:40 +0800
Subject: [PATCH] Add audit and apply methods for 7.1.3

---
 .../7.1.3_disable_interface_promisc_mode.sh   | 65 +++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100755 bin/hardening/7.1.3_disable_interface_promisc_mode.sh

diff --git a/bin/hardening/7.1.3_disable_interface_promisc_mode.sh b/bin/hardening/7.1.3_disable_interface_promisc_mode.sh
new file mode 100755
index 0000000..b1b5373
--- /dev/null
+++ b/bin/hardening/7.1.3_disable_interface_promisc_mode.sh
@@ -0,0 +1,65 @@
+#!/bin/bash
+
+#
+# harbian audit 7/8/9  Hardening
+#
+
+#
+# 7.1.3 Disable promiscuous mode for network interface (Scored)
+# Authors : Samson wen, Samson <sccxboy@gmail.com>
+#
+
+set -e # One error, it's over
+set -u # One variable unset, it's over
+
+HARDENING_LEVEL=2
+
+KEYWORD='promisc'
+
+# This function will be called if the script status is on enabled / audit mode
+audit () {
+    COUNT=$(ip link | grep -i "${KEYWORD}" | wc -l)
+    if [ $COUNT -gt 0 ]; then
+        crit "The total number of network interfaces with ${KEYWORD} mode set is ${COUNT}"
+        FNRET=1
+    else
+        ok "Not set ${KEYWORD} mode for network interface in the system."
+        FNRET=0
+    fi
+}
+
+# This function will be called if the script status is on enabled mode
+apply () {
+    if [ $FNRET != 0 ]; then
+        warn "Disable promiscuous mode for network interface"
+        for INTERFACE in $(ip link | grep -i  promisc | awk -F: '{print $2}')
+        do
+            ip link set dev ${INTERFACE} multicast off promisc off
+        done
+    else
+        ok "Not set ${KEYWORD} mode for network interface in the system."
+    fi
+}
+
+# This function will check config parameters required
+check_config() {
+    :
+}
+
+# Source Root Dir Parameter
+if [ -r /etc/default/cis-hardening ]; then
+    . /etc/default/cis-hardening
+fi
+if [ -z "$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
+    . $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