Microsoft Windows 10: Service: LxssManager

##############################################################################
# OpenVAS Vulnerability Test
# $Id: win_lxssmanager.nasl 11344 2018-09-12 06:57:52Z emoss $
#
# Check value for LxssManager
#
# 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("1.3.6.1.4.1.25623.1.0.109261");
  script_version("$Revision: 11344 $");
  script_tag(name:"last_modification", value:"$Date: 2018-09-12 08:57:52 +0200 (Wed, 12 Sep 2018) $");
  script_tag(name:"creation_date", value:"2018-06-13 10:43:57 +0200 (Wed, 13 Jun 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 10: Service: LxssManager');
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (c) 2018 Greenbone Networks GmbH");
  script_family("Policy");
  script_dependencies("smb_reg_service_pack.nasl", "os_detection.nasl");
  script_add_preference(name:"Value", type:"radio", value:"4;0;1;2;3");
  script_mandatory_keys("Compliance/Launch");
  script_tag(name:"summary", value:"This test checks the setting for policy
'LxssManager' on Windows hosts (Windows 10).

The service supports running native ELF binaries and provides the infrastructure
necessary for ELF binaries to run on Windows.");
  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);
}

HostDetails = get_kb_list("HostDetails");
if("cpe:/o:microsoft:windows_10" >!< HostDetails){
  policy_logging(text:'Host is not a Microsoft Windows 10 system.
This setting applies to Windows 10 systems only.');
  exit(0);
}

title = 'LxssManager';
fixtext = 'Set following UI path accordingly:
Computer Configuration/Policies/Windows Settings/Security Settings/System Services' + title;
type = 'HKLM';
key = 'SYSTEM\\CurrentControlSet\\Services\\LxssManager';
item = 'Start';
default = script_get_preference('Value');
value = registry_get_dword(key:key, item:item, type:type);
if(value == ''){
  value = '4';
}

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);
policy_control_name(title:title);

exit(0);