debian-cis/bin/hardening/1.7.1.3_remove_os_info_issue_net.sh
2020-12-10 09:50:33 +01:00

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#!/bin/bash
# run-shellcheck
#
# CIS Debian Hardening
#
#
# 1.7.1.3 Ensure remote login warning banner is configured properly (Scored)
#
set -e # One error, it's over
set -u # One variable unset, it's over
# shellcheck disable=2034
HARDENING_LEVEL=3
# shellcheck disable=2034
DESCRIPTION="Remove OS information from remote Login Warning Banners."
FILE='/etc/issue.net'
PATTERN='(\\v|\\r|\\m|\\s)'
# This function will be called if the script status is on enabled / audit mode
audit() {
does_pattern_exist_in_file "$FILE" "$PATTERN"
if [ "$FNRET" = 0 ]; then
crit "$PATTERN is present in $FILE"
else
ok "$PATTERN is not present in $FILE"
fi
}
# This function will be called if the script status is on enabled mode
apply() {
does_pattern_exist_in_file "$FILE" "$PATTERN"
if [ "$FNRET" = 0 ]; then
warn "$PATTERN is present in $FILE"
delete_line_in_file "$FILE" "$PATTERN"
else
ok "$PATTERN is not present in $FILE"
fi
}
# This function will check config parameters required
check_config() {
:
}
# Source Root Dir Parameter
if [ -r /etc/default/cis-hardening ]; then
# shellcheck source=../../debian/default
. /etc/default/cis-hardening
fi
if [ -z "$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 "$CIS_ROOT_DIR"/lib/main.sh ]; then
# shellcheck source=../../lib/main.sh
. "$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