153 lines
4.4 KiB
Bash
Executable File
153 lines
4.4 KiB
Bash
Executable File
#!/bin/bash
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#
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# harbian-audit for Debian GNU/Linux 7/8/9/10 or CentOS Hardening
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# Modify by: Samson-W (samson@hardenedlinux.org)
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#
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# 4.5 Activate AppArmor (Scored)
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# Add by Author : Samson wen, Samson <sccxboy@gmail.com>
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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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HARDENING_LEVEL=3
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PACKAGES='apparmor apparmor-profiles apparmor-utils'
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KEYWORD="GRUB_CMDLINE_LINUX"
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PATTERN="apparmor=1[[:space:]]*security=apparmor"
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SETSTRING="apparmor=1 security=apparmor"
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GRUBFILE='/etc/default/grub'
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SERVICENAME='apparmor.service'
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SELINUXSETSTRING="security=selinux"
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audit_debian () {
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if [ $(grep -c "${SELINUXSETSTRING}" /proc/cmdline) -eq 1 ]; then
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ok "SELinux was actived. So pass."
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return 0
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fi
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for PACKAGE in ${PACKAGES}
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do
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is_pkg_installed $PACKAGE
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if [ $FNRET != 0 ]; then
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crit "$PACKAGE is absent!"
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FNRET=1
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fi
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done
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if [ $FNRET = 0 ]; then
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ok "$PACKAGE is installed"
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# Since Debian 10 (Buster), AppArmor is enabled by default. It's a system service
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is_debian_ge_10
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if [ $FNRET = 0 ]; then
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is_service_active $SERVICENAME
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if [ $FNRET -eq 0 ]; then
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ok "$SERVICENAME is active!"
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FNRET=0
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else
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crit "$SERVICENAME is inactive!"
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FNRET=2
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fi
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else
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if [ $(grep -c "${SETSTRING}" /proc/cmdline) -eq 1 ]; then
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ok "There are ${SETSTRING} to ${KEYWORD} in ${GRUBFILE}"
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is_mounted "/sys/kernel/security"
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if [ ${FNRET} -eq 0 -a $(/usr/sbin/aa-status 2>&1 | grep -c "apparmor filesystem is not mounted.") -eq 1 ]; then
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crit "AppArmor profiles not enable in the system "
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FNRET=3
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elif [ ${FNRET} -eq 0 -a $(/usr/sbin/aa-status | grep 'profiles are loaded' | awk '{print $1}') -gt 0 ]; then
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ok "AppArmor profiles is enable in the system "
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FNRET=0
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fi
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else
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crit "There are ${SETSTRING} to ${KEYWORD} not in ${GRUBFILE}"
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FNRET=2
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fi
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fi
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fi
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}
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audit_centos () {
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ok "AppArmor is only support for Debian, So pass!"
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}
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# This function will be called if the script status is on enabled / audit mode
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audit () {
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if [ $OS_RELEASE -eq 1 ]; then
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audit_debian
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elif [ $OS_RELEASE -eq 2 ]; then
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audit_centos
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else
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crit "Current OS is not support!"
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FNRET=44
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fi
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}
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apply_debian () {
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if [ $(grep -c "${SELINUXSETSTRING}" /proc/cmdline) -eq 1 ]; then
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ok "SELinux was actived. So pass."
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return 0
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fi
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if [ $FNRET = 0 ]; then
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ok "AppArmor profiles is enable in the system "
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elif [ $FNRET = 1 ]; then
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warn "$PACKAGE is not installed, install $PACKAGES"
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for PACKAGE in ${PACKAGES}
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do
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apt_install $PACKAGE
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done
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elif [ $FNRET = 2 ]; then
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# Since Debian 10 (Buster), AppArmor is enabled by default. It's a system service
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is_debian_ge_10
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if [ $FNRET = 0 ]; then
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warn "Start $SERVICENAME"
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systemctl start $SERVICENAME
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else
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warn "Set ${SETSTRING} to ${GRUBFILE} in ${GRUBFILE}, need to reboot the system and enable AppArmor profiles after setting it."
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sed -i "s;\(${KEYWORD}=\)\(\".*\)\(\"\);\1\2 ${SETSTRING}\3;" ${GRUBFILE}
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/usr/sbin/update-grub2
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fi
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elif [ $FNRET = 3 ]; then
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warn "Enable AppArmor profiles in the system "
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/usr/sbin/aa-enforce /etc/apparmor.d/*
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fi
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}
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apply_centos () {
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ok "AppArmor is only support for Debian, So pass!"
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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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if [ $OS_RELEASE -eq 1 ]; then
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apply_debian
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elif [ $OS_RELEASE -eq 2 ]; then
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apply_centos
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else
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crit "Current OS is not support!"
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fi
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}
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# This function will check config parameters required
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check_config() {
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:
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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. /etc/default/cis-hardening
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fi
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if [ -z "$CIS_ROOT_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_ROOT_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_ROOT_DIR/lib/main.sh ]; then
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. $CIS_ROOT_DIR/lib/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_ROOT_DIR in /etc/default/cis-hardening"
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exit 128
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fi
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