Microsoft Windows: Require secure RPC communication (Remote Desktop Services)

2018-06-27T00:00:00
ID OPENVAS:1361412562310109470
Type openvas
Reporter Copyright (c) 2018 Greenbone Networks GmbH
Modified 2018-09-12T00:00:00

Description

This test checks the setting for policy

                                        
                                            ##############################################################################
# OpenVAS Vulnerability Test
# $Id: win_rdhost_secure_rpc.nasl 11363 2018-09-12 13:46:05Z emoss $
#
# Check value for Require secure RPC communication
#
# Authors:
# Emanuel Moss <emanuel.moss@greenbone.net>
#
# 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("1.3.6.1.4.1.25623.1.0.109470");
  script_version("$Revision: 11363 $");
  script_tag(name:"last_modification", value:"$Date: 2018-09-12 15:46:05 +0200 (Wed, 12 Sep 2018) $");
  script_tag(name:"creation_date", value:"2018-06-27 11:45:02 +0200 (Wed, 27 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: Require secure RPC communication (Remote Desktop Services)');
  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 setting for policy
'Require secure RPC communication' on Windows hosts (at least Windows 7).

The setting specifies whether a Remote Desktop Session Host server requires
secure RPC communication with all clients or allows unsecured communication.
The setting strengthens the security of RPC communication with clients by
allowing only authenticated and encrypted requests.");
  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 = 'Require secure RPC communication';
fixtext = 'Set following UI path accordingly:
Computer Configuration/Administrative Templates/Windows Components/
Remote Desktop Services/Remote Desktop Session Host/Security/' + title;
type = 'HKLM';
key = 'Software\\Policies\\Microsoft\\Windows NT\\Terminal Services';
item = 'fEncryptRPCTraffic';
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);