4.2_enable_nx_support.sh 4.3_enable_randomized_vm_placement.sh 4.4_disable_prelink.sh 4.5_enable_apparmor.sh 5.1.1_disable_nis.sh

bin/hardening/4.2_enable_nx_support.sh

@@ -0,0 +1,53 @@
+#!/bin/bash
+
+#
+# CIS Debian 7 Hardening
+#
+
+#
+# Hardening script skeleton replace this line with proper point treated
+#
+
+set -e # One error, it's over
+set -u # One variable unset, it's over
+
+PATTERN='NX[[:space:]]\(Execute[[:space:]]Disable\)[[:space:]]protection:[[:space:]]active'
+
+# This function will be called if the script status is on enabled / audit mode
+audit () {
+    does_pattern_exists_in_dmesg $PATTERN
+    if [ $FNRET != 0 ]; then
+        crit "$PATTERN not present in dmesg"
+    else
+        ok "$PATTERN present in dmesg"
+    fi
+}
+
+# This function will be called if the script status is on enabled mode
+apply () {
+    does_pattern_exists_in_dmesg $PATTERN
+    if [ $FNRET != 0 ]; then
+        crit "$PATTERN not present in dmesg, please go to the bios to activate this option or change for CPU compatible"
+    else
+        ok "$PATTERN present in dmesg"
+    fi
+}
+
+# This function will check config parameters required
+check_config() {
+    :
+}
+
+# Source Root Dir Parameter
+if [ ! -r /etc/default/cis-hardenning ]; then
+    echo "There is no /etc/default/cis-hardenning file, cannot source CIS_ROOT_DIR variable, aborting"
+    exit 128
+else
+    . /etc/default/cis-hardenning
+    if [ -z $CIS_ROOT_DIR ]; then
+        echo "No CIS_ROOT_DIR variable, aborting"
+    fi
+fi 
+
+# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
+[ -r $CIS_ROOT_DIR/lib/main.sh ] && . $CIS_ROOT_DIR/lib/main.sh

bin/hardening/4.3_enable_randomized_vm_placement.sh

@@ -0,0 +1,59 @@
+#!/bin/bash
+
+#
+# CIS Debian 7 Hardening
+#
+
+#
+# Hardening script skeleton replace this line with proper point treated
+#
+
+set -e # One error, it's over
+set -u # One variable unset, it's over
+
+SYSCTL_PARAM='kernel.randomize_va_space'
+SYSCTL_EXP_RESULT=2
+
+# This function will be called if the script status is on enabled / audit mode
+audit () {
+    has_sysctl_param_expected_result $SYSCTL_PARAM $SYSCTL_EXP_RESULT
+    if [ $FNRET != 0 ]; then
+        crit "$SYSCTL_PARAM has not $SYSCTL_EXP_RESULT value !"
+    elif [ $FNRET = 255 ]; then
+        warn "$SYSCTL_PARAM does not exist, typo ?"
+    else
+        ok "$SYSCTL_PARAM correctly set to $SYSCTL_EXP_RESULT"
+    fi
+}
+
+# This function will be called if the script status is on enabled mode
+apply () {
+    has_sysctl_param_expected_result $SYSCTL_PARAM $SYSCTL_EXP_RESULT
+    if [ $FNRET != 0 ]; then
+        warn "$SYSCTL_PARAM has not $SYSCTL_EXP_RESULT value, correcting it"
+        set_sysctl_param $SYSCTL_PARAM $SYSCTL_EXP_RESULT
+    elif [ $FNRET = 255 ]; then
+        warn "$SYSCTL_PARAM does not exist, typo ?"
+    else
+        ok "$SYSCTL_PARAM correctly set to $SYSCTL_EXP_RESULT"
+    fi
+}
+
+# This function will check config parameters required
+check_config() {
+    :
+}
+
+# Source Root Dir Parameter
+if [ ! -r /etc/default/cis-hardenning ]; then
+    echo "There is no /etc/default/cis-hardenning file, cannot source CIS_ROOT_DIR variable, aborting"
+    exit 128
+else
+    . /etc/default/cis-hardenning
+    if [ -z $CIS_ROOT_DIR ]; then
+        echo "No CIS_ROOT_DIR variable, aborting"
+    fi
+fi 
+
+# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
+[ -r $CIS_ROOT_DIR/lib/main.sh ] && . $CIS_ROOT_DIR/lib/main.sh

bin/hardening/4.4_disable_prelink.sh

@@ -0,0 +1,57 @@
+#!/bin/bash
+
+#
+# CIS Debian 7 Hardening
+#
+
+#
+# 4.4 Disable Prelink (Scored)
+#
+
+set -e # One error, it's over
+set -u # One variable unset, it's over
+
+PACKAGE='prelink'
+
+# This function will be called if the script status is on enabled / audit mode
+audit () {
+    is_pkg_installed $PACKAGE
+    if [ $FNRET = 0 ]; then
+        crit "$PACKAGE is installed !"
+    else
+        ok "$PACKAGE is absent"
+    fi
+    :
+}
+
+# This function will be called if the script status is on enabled mode
+apply () {
+    is_pkg_installed $PACKAGE
+    if [ $FNRET = 0 ]; then
+        crit "$PACKAGE is installed, purging it"
+        /usr/sbin/prelink -ua
+        apt-get purge $PACKAGE -y
+    else
+        ok "$PACKAGE is absent"
+    fi
+    :
+}
+
+# This function will check config parameters required
+check_config() {
+    :
+}
+
+# Source Root Dir Parameter
+if [ ! -r /etc/default/cis-hardenning ]; then
+    echo "There is no /etc/default/cis-hardenning file, cannot source CIS_ROOT_DIR variable, aborting"
+    exit 128
+else
+    . /etc/default/cis-hardenning
+    if [ -z $CIS_ROOT_DIR ]; then
+        echo "No CIS_ROOT_DIR variable, aborting"
+    fi
+fi 
+
+# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
+[ -r $CIS_ROOT_DIR/lib/main.sh ] && . $CIS_ROOT_DIR/lib/main.sh

bin/hardening/4.5_enable_apparmor.sh

@@ -0,0 +1,55 @@
+#!/bin/bash
+
+#
+# CIS Debian 7 Hardening
+#
+
+#
+# 4.5 Activate AppArmor (Scored)
+#
+
+set -e # One error, it's over
+set -u # One variable unset, it's over
+
+PACKAGE='apparmor'
+
+# This function will be called if the script status is on enabled / audit mode
+audit () {
+    is_pkg_installed $PACKAGE
+    if [ $FNRET != 0 ]; then
+        crit "$PACKAGE is absent !"
+    else
+        ok "$PACKAGE is installed"
+    fi
+    :
+}
+
+# This function will be called if the script status is on enabled mode
+apply () {
+    is_pkg_installed $PACKAGE
+    if [ $FNRET != 0 ]; then
+        crit "$PACKAGE is not installed, please install $PACKAGE and configure it"
+    else
+        ok "$PACKAGE is installed"
+    fi
+    :
+}
+
+# This function will check config parameters required
+check_config() {
+    :
+}
+
+# Source Root Dir Parameter
+if [ ! -r /etc/default/cis-hardenning ]; then
+    echo "There is no /etc/default/cis-hardenning file, cannot source CIS_ROOT_DIR variable, aborting"
+    exit 128
+else
+    . /etc/default/cis-hardenning
+    if [ -z $CIS_ROOT_DIR ]; then
+        echo "No CIS_ROOT_DIR variable, aborting"
+    fi
+fi 
+
+# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
+[ -r $CIS_ROOT_DIR/lib/main.sh ] && . $CIS_ROOT_DIR/lib/main.sh

bin/hardening/5.1.1_disable_nis.sh

@@ -0,0 +1,55 @@
+#!/bin/bash
+
+#
+# CIS Debian 7 Hardening
+#
+
+#
+# 5.1.1 Ensure NIS is not installed (Scored)
+#
+
+set -e # One error, it's over
+set -u # One variable unset, it's over
+
+PACKAGE='nis'
+
+# This function will be called if the script status is on enabled / audit mode
+audit () {
+    is_pkg_installed $PACKAGE
+    if [ $FNRET = 0 ]; then
+        crit "$PACKAGE is installed !"
+    else
+        ok "$PACKAGE is absent"
+    fi
+    :
+}
+
+# This function will be called if the script status is on enabled mode
+apply () {
+    is_pkg_installed $PACKAGE
+    if [ $FNRET = 0 ]; then
+        crit "$PACKAGE is installed, purging it"
+        apt-get purge $PACKAGE -y
+    else
+        ok "$PACKAGE is absent"
+    fi
+}
+
+# This function will check config parameters required
+check_config() {
+    :
+}
+
+# Source Root Dir Parameter
+if [ ! -r /etc/default/cis-hardenning ]; then
+    echo "There is no /etc/default/cis-hardenning file, cannot source CIS_ROOT_DIR variable, aborting"
+    exit 128
+else
+    . /etc/default/cis-hardenning
+    if [ -z $CIS_ROOT_DIR ]; then
+        echo "No CIS_ROOT_DIR variable, aborting"
+    fi
+fi 
+
+# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
+[ -r $CIS_ROOT_DIR/lib/main.sh ] && . $CIS_ROOT_DIR/lib/main.sh

etc/conf.d/4.2_enable_nx_support.cfg

@@ -0,0 +1,2 @@
+# Configuration for script of same name
+status=enabled

etc/conf.d/4.3_enable_randomized_vm_placement.cfg

@@ -0,0 +1,2 @@
+# Configuration for script of same name
+status=enabled

etc/conf.d/4.4_disable_prelink.cfg

@@ -0,0 +1,2 @@
+# Configuration for script of same name
+status=enabled

etc/conf.d/4.5_enable_apparmor.cfg

@@ -0,0 +1,2 @@
+# Configuration for script of same name
+status=enabled

etc/conf.d/5.1.1_disable_nis.cfg

@@ -0,0 +1,2 @@
+# Configuration for script of same name
+status=enabled

lib/utils.sh

@@ -10,7 +10,7 @@ has_sysctl_param_expected_result() {
 
     if [ "$(sysctl $SYSCTL_PARAM 2>/dev/null)" = "$SYSCTL_PARAM = $EXP_RESULT" ]; then
         FNRET=0
-    elif [ $? != 0 ]; then
+    elif [ $? = 255 ]; then
         debug "$SYSCTL_PARAM does not exist"
         FNRET=255
     else
@@ -23,7 +23,7 @@ set_sysctl_param() {
     local SYSCTL_PARAM=$1
     local VALUE=$2
     debug "Setting $SYSCTL_PARAM to $VALUE"
-    if [ "$(sysctl -w $SYSCTL_PARAM 2>/dev/null)" = "$SYSCTL_PARAM = $VALUE" ]; then
+    if [ "$(sysctl -w $SYSCTL_PARAM=$VALUE 2>/dev/null)" = "$SYSCTL_PARAM = $VALUE" ]; then
         FNRET=0
     elif [ $? != 0 ]; then
         debug "$SYSCTL_PARAM does not exist"
@@ -34,6 +34,18 @@ set_sysctl_param() {
     fi
 }
 
+#
+# Dmesg Manipulation
+#
+
+does_pattern_exists_in_dmesg() {
+    local PATTERN=$1
+    if $(dmesg | grep -qE "$PATTERN"); then
+        FNRET=0
+    else
+        FNRET=1
+    fi
+}
 
 #
 # File manipulation
@@ -275,8 +287,10 @@ is_pkg_installed()
 {
     PKG_NAME=$1
     if $(dpkg -s $PKG_NAME 2> /dev/null | grep -q '^Status: install ') ; then
+        debug "$PKG_NAME is installed"
         FNRET=0
     else
+        debug "$PKG_NAME is not installed"
         FNRET=1
     fi
 }