Microsoft Windows Defender AV: Threat alert levels at which default action should not be taken (Medium)

##############################################################################
# OpenVAS Vulnerability Test
# $Id: win_av_threat_severity_default_action_2.nasl 11495 2018-09-20 10:06:25Z emoss $
#
# Check value for Specify threat alert levels at which default action should
# not be taken when detected (Medium)
#
# 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("1.3.6.1.4.1.25623.1.0.109643");
  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: Threat alert levels at which default action should not be taken (Medium)');
  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:"2;3;6");
  script_mandatory_keys("Compliance/Launch");
  script_tag(name:"summary", value:"This test checks the setting for policy 'Specify threat alert
levels at which default action should not be taken when detected' on Windows hosts.

The policy setting allows you to customize which automatic remediation action will be taken for each
threat alert level. Threat alert levels should be added under the Options for this setting. Each
entry must be listed as a name value pair. The name defines a threat alert level. The value contains
the action ID for the remediation action that should be taken.");
  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 = 'Specify threat alert levels at which default action should not be taken when detected (Medium)';
fixtext = 'Set following UI path accordingly:
Computer Configuration/Administrative Templates/Windows Components/Windows Defender Antivirus/Threats/' + title;
type = 'HKLM';
key = 'Software\\Policies\\Microsoft\\Windows Defender\\Threats\\ThreatSeverityDefaultAction';
item = '2';
default = script_get_preference('Value');
value = registry_get_sz(key:key, item:item, type:type);

if(value == ''){
  value = '6';
}

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);