Microsoft Windows: Configure registry policy processing (background processing)

##############################################################################
# OpenVAS Vulnerability Test
# $Id: win_no_background_policy.nasl 11337 2018-09-11 14:23:53Z emoss $
#
# Check value for Configure registry policy processing:Do not apply during periodic background processing
#
# 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("1.3.6.1.4.1.25623.1.0.109349");
  script_version("$Revision: 11337 $");
  script_tag(name:"last_modification", value:"$Date: 2018-09-11 16:23:53 +0200 (Tue, 11 Sep 2018) $");
  script_tag(name:"creation_date", value:"2018-06-25 09:46:30 +0200 (Mon, 25 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: Configure registry policy processing (background processing)');
  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");
  script_mandatory_keys("Compliance/Launch");
  script_tag(name:"summary", value:"This test checks the setting for policy
'Configure registry policy processing:Do not apply during periodic background
processing' on Windows hosts (at least Windows 7).

The policy setting controls when registry policies are updated.
The setting affects all policies in the Administrative Templates folder and any
other policies that store values in the registry. It overrides customized
settings that the program implementing a registry policy set when it was installed.
This option prevents the system from updating affected policies in the
background while the computer is in use. When background updates are disabled,
policy changes will not take effect until the next user logon or system restart.");
  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 Windows are not supported any more. Please update the
Operating System.');
  exit(0);
}

title = 'Configure registry policy processing: Do not apply during periodic background processing';
fixtext = 'Set following UI path accordingly:
Computer Configuration/Administrative Templates/System/Group Policy/' + title;
type = 'HKLM';
key = 'Software\\Policies\\Microsoft\\Windows\\Group Policy\\{35378EAC-683F-11D2-A89A-00C04FBBCFA2}';
item = 'NoBackgroundPolicy';
value = registry_get_dword(key:key, item:item, type:type);
default = script_get_preference('Value');

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);