76 lines
2.4 KiB
Bash
76 lines
2.4 KiB
Bash
|
#!/bin/bash
|
||
|
|
|
||
|
|
#
|
||
|
|
# CIS Debian 7/8 Hardening
|
||
|
|
#
|
||
|
|
|
||
|
|
#
|
||
|
|
# 7.2.5 Enable Ignore Broadcast Requests (Scored)
|
||
|
|
#
|
||
|
|
|
||
|
|
set -e # One error, it's over
|
||
|
|
set -u # One variable unset, it's over
|
||
|
|
|
||
|
|
HARDENING_LEVEL=2
|
||
|
|
|
||
|
|
SYSCTL_PARAMS='net.ipv4.icmp_echo_ignore_broadcasts=1'
|
||
|
|
|
||
|
|
# This function will be called if the script status is on enabled / audit mode
|
||
|
|
audit () {
|
||
|
|
for SYSCTL_VALUES in $SYSCTL_PARAMS; do
|
||
|
|
SYSCTL_PARAM=$(echo $SYSCTL_VALUES | cut -d= -f 1)
|
||
|
|
SYSCTL_EXP_RESULT=$(echo $SYSCTL_VALUES | cut -d= -f 2)
|
||
|
|
debug "$SYSCTL_PARAM should be set to $SYSCTL_EXP_RESULT"
|
||
|
|
has_sysctl_param_expected_result $SYSCTL_PARAM $SYSCTL_EXP_RESULT
|
||
|
|
if [ $FNRET != 0 ]; then
|
||
|
|
crit "$SYSCTL_PARAM was not set to $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
|
||
|
|
done
|
||
|
|
}
|
||
|
|
|
||
|
|
# This function will be called if the script status is on enabled mode
|
||
|
|
apply () {
|
||
|
|
for SYSCTL_VALUES in $SYSCTL_PARAMS; do
|
||
|
|
SYSCTL_PARAM=$(echo $SYSCTL_VALUES | cut -d= -f 1)
|
||
|
|
SYSCTL_EXP_RESULT=$(echo $SYSCTL_VALUES | cut -d= -f 2)
|
||
|
|
debug "$SYSCTL_PARAM should be set to $SYSCTL_EXP_RESULT"
|
||
|
|
has_sysctl_param_expected_result $SYSCTL_PARAM $SYSCTL_EXP_RESULT
|
||
|
|
if [ $FNRET != 0 ]; then
|
||
|
|
warn "$SYSCTL_PARAM was not set to $SYSCTL_EXP_RESULT -- Fixing"
|
||
|
|
set_sysctl_param $SYSCTL_PARAM $SYSCTL_EXP_RESULT
|
||
|
|
sysctl -w net.ipv4.route.flush=1 > /dev/null
|
||
|
|
elif [ $FNRET = 255 ]; then
|
||
|
|
warn "$SYSCTL_PARAM does not exist -- Typo?"
|
||
|
|
else
|
||
|
|
ok "$SYSCTL_PARAM correctly set to $SYSCTL_EXP_RESULT"
|
||
|
|
fi
|
||
|
|
done
|
||
|
|
}
|
||
|
|
|
||
|
|
# This function will check config parameters required
|
||
|
|
check_config() {
|
||
|
|
:
|
||
|
|
}
|
||
|
|
|
||
|
|
# Source Root Dir Parameter
|
||
|
|
if [ -r /etc/default/cis-hardening ]; then
|
||
|
|
. /etc/default/cis-hardening
|
||
|
|
fi
|
||
|
|
if [ -z "$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
|