Microsoft Windows: Presence of LAPS AdmPwd GPO Extension / CSE

##############################################################################
# OpenVAS Vulnerability Test
# $Id: win_laps_admpwd_installed.nasl 11532 2018-09-21 19:07:30Z cfischer $
#
# Check value for Ensure LAPS AdmPwd GPO Extension / CSE is installed
#
# 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("1.3.6.1.4.1.25623.1.0.109298");
  script_version("$Revision: 11532 $");
  script_tag(name:"last_modification", value:"$Date: 2018-09-21 21:07:30 +0200 (Fri, 21 Sep 2018) $");
  script_tag(name:"creation_date", value:"2018-06-15 10:20:10 +0200 (Fri, 15 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: Presence of LAPS AdmPwd GPO Extension / CSE');
  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");
  script_mandatory_keys("Compliance/Launch");
  script_tag(name:"summary", value:"This test checks the presence of LAPS AdmPwd
GPO Extension / CSE on Windows hosts (at least Windows 8.1).

The Local Administrator Password Solution (LAPS) tool, which is free and
supported software that allows an organization to automatically set randomized
and unique local Administrator account passwords on domain-attached workstations
and Member Servers. The passwords are stored in a confidential attribute of the
domain computer account and can be retrieved from Active Directory by approved
Sysadmins when needed.");
  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.
This settings applies to higher Windows versions only.');
  exit(0);
}

title = 'Presence of LAPS AdmPwd GPO Extension / CSE';
fixtext = 'Install LAPS AdmPwd GPO Extension.';
type = 'HKLM';
key = 'SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Winlogon\\GPExtensions\\{D76B9641-3288-4f75-942D-087DE603E3EA}';
item = 'DllName';
default = script_get_preference('Value');
value = registry_get_sz(key:key, item:item, type:type);

if(!value){
  value = '0';
}else{
  value = '1';
}

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);