Microsoft Windows: Turn On Virtualization Based Security (Virtualization Based Protection of Code Integrity)

##############################################################################
# OpenVAS Vulnerability Test
# $Id: win_vbs_protection_code_integrity.nasl 11381 2018-09-13 14:55:03Z emoss $
#
# Check value for Turn On Virtualization Based Security: Virtualization
# Based Protection of Code Integrity
#
# 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("1.3.6.1.4.1.25623.1.0.109602");
  script_version("$Revision: 11381 $");
  script_tag(name:"last_modification", value:"$Date: 2018-09-13 16:55:03 +0200 (Thu, 13 Sep 2018) $");
  script_tag(name:"creation_date", value:"2018-09-13 12:46:22 +0200 (Thu, 13 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: Turn On Virtualization Based Security (Virtualization Based Protection of Code Integrity)');
  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:"0;1;2;3");
  script_mandatory_keys("Compliance/Launch");
  script_tag(name:"summary", value:"This test checks the setting for policy
'Turn On Virtualization Based Security (Virtualization Based Protection of Code Integrity)' on
Windows hosts (at least Windows 8.1).

The setting enables virtualization based protection of Kernel Mode Code Integrity.");
  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") < "6.3"){
  policy_logging(text:'Host is not at least a Microsoft Windows 8.1 system.
These setting only applies to Windows 8.1 or higher systems.');
  exit(0);
}

title = 'Turn On Virtualization Based Security (Virtualization Based Protection of Code Integrity)';
fixtext = 'Set following UI path accordingly:
Computer Configuration/Administrative Templates/System/Device Guard/' + title;
type = 'HKLM';
key = 'SOFTWARE\\Policies\\Microsoft\\Windows\\DeviceGuard';
item = 'HypervisorEnforcedCodeIntegrity';
default = script_get_preference('Value');
value = registry_get_dword(key:key, item:item, type:type);

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

if(int(value) == int(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);