Microsoft Windows Defender AV: Prevent users and apps from accessing dangerous websites

##############################################################################
# OpenVAS Vulnerability Test
# $Id: win_av_accessing_dangerous_websites.nasl 11495 2018-09-20 10:06:25Z emoss $
#
# Check value for Prevent users and apps from accessing dangerous websites
#
# Authors:
# Emanuel Moss <[email protected]>
#
# Copyright:
# Copyright (c) 2018 Greenbone Networks GmbH, http://www.greenbone.net
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2
# (or any later version), as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
###############################################################################

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.109641");
  script_version("$Revision: 11495 $");
  script_tag(name:"last_modification", value:"$Date: 2018-09-20 12:06:25 +0200 (Thu, 20 Sep 2018) $");
  script_tag(name:"creation_date", value:"2018-09-19 14:32:34 +0200 (Wed, 19 Sep 2018)");
  script_tag(name:"cvss_base", value:"0.0");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:H/Au:S/C:N/I:N/A:N");
  script_tag(name:"qod", value:"97");
  script_name('Microsoft Windows Defender AV: Prevent users and apps from accessing dangerous websites');
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (c) 2018 Greenbone Networks GmbH");
  script_family("Policy");
  script_dependencies("smb_reg_service_pack.nasl");
  script_add_preference(name:"Value", type:"radio", value:"1;0;2");
  script_mandatory_keys("Compliance/Launch");
  script_tag(name:"summary", value:"This test checks the setting for policy 'Prevent users and apps
from accessing dangerous websites' on Windows hosts.

Enable or disable Windows Defender Exploit Guard network protection to prevent employees from using
any application to access dangerous domains that may host phishing scams, exploit-hosting sites, and
other malicious content on the Internet.");
  exit(0);
}

include("smb_nt.inc");
include("policy_functions.inc");

if(!get_kb_item("SMB/WindowsVersion")){
  policy_logging(text:'Host is no Microsoft Windows System or it is not possible
to query the registry.');
  exit(0);
}

if(get_kb_item("SMB/WindowsVersion") < "6.1"){
  policy_logging(text:'Host is not at least a Microsoft Windows 7 system.
Older versions of Microsoft Windows are not supported any more.
Please update the system.');
  exit(0);
}

title = 'Prevent users and apps from accessing dangerous websites';
fixtext = 'Set following UI path accordingly:
Computer Configuration/Administrative Templates/Windows Components/Windows Defender Antivirus/Windows
Defender Exploit Guard/Network Protection/' + title;
type = 'HKLM';
key = 'Software\\Policies\\Microsoft\\Windows Defender\\Windows Defender Exploit Guard\\Network Protection';
item = 'EnableNetworkProtection';
default = script_get_preference('Value');
value = registry_get_dword(key:key, item:item, type:type);

if(value == ''){
  value = '0';
}

if(value == default){
  compliant = 'yes';
}else{
  compliant = 'no';
}

policy_logging(text:'"' + title + '" is set to: ' + value);
policy_add_oid();
policy_set_dval(dval:default);
policy_fixtext(fixtext:fixtext);
policy_control_name(title:title);
policy_set_kb(val:value);
policy_set_compliance(compliant:compliant);

exit(0);