harbian-audit/bin/hardening/6.2_disable_avahi_server.sh

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#!/bin/bash
#
# harbian-audit for Debian GNU/Linux 7/8/9 or CentOS Hardening
# Modify by: Samson-W (samson@hardenedlinux.org)
#
#
# 6.2 Ensure Avahi Server is not enabled (Scored)
#
set -e # One error, it's over
set -u # One variable unset, it's over
HARDENING_LEVEL=3
HARDENING_EXCEPTION=dns
PACKAGES='avahi-daemon libavahi-common-data libavahi-common3 libavahi-core7'
PKGS_PATTERN_CENTOS='avahi'
# This function will be called if the script status is on enabled / audit mode
audit () {
if [ $OS_RELEASE -eq 2 ]; then
PACKAGES=$PKGS_PATTERN_CENTOS
fi
for PACKAGE in $PACKAGES; do
is_pkg_installed $PACKAGE
if [ $FNRET = 0 ]; then
if [ $ISEXCEPTION -eq 1 ]; then
warn "$PACKAGE is installed! But Exception is set to 1, so it's pass!"
else
crit "$PACKAGE is installed!"
fi
else
ok "$PACKAGE is absent"
fi
done
}
# This function will be called if the script status is on enabled mode
apply () {
if [ $OS_RELEASE -eq 2 ]; then
PACKAGES=$PKGS_PATTERN_CENTOS
fi
for PACKAGE in $PACKAGES; do
is_pkg_installed $PACKAGE
if [ $FNRET = 0 ]; then
if [ $ISEXCEPTION -eq 1 ]; then
warn "$PACKAGE is installed! But the exception is set to true, so don't need any operate."
else
crit "$PACKAGE is installed, purging it"
if [ $OS_RELEASE -eq 2 ]; then
for PKGNAME in $(rpm -qa | grep $PACKAGES); do
yum autoremove $PKGNAME -y
done
else
apt-get purge $PACKAGE -y
apt-get autoremove
fi
fi
else
ok "$PACKAGE is absent"
fi
done
}
# This function will create the config file for this check with default values
create_config() {
cat <<EOF
status=disabled
# Put here exception to pass this case, if set is 1, don't need apply, let to pass.
ISEXCEPTION=0
EOF
}
# 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