Microsoft Office: Prevent users from changing permissions on rights managed content

2018-04-17T00:00:00
ID OPENVAS:1361412562310109067
Type openvas
Reporter Copyright (c) 2018 Greenbone Networks GmbH
Modified 2018-10-11T00:00:00

Description

This test checks the setting for policy

                                        
                                            ##############################################################################
# OpenVAS Vulnerability Test
# $Id: office2013_prevent_user_change_permissions.nasl 11843 2018-10-11 14:33:21Z emoss $
#
# Check value for Prevent users from changing permissions on rights managed content
#
# 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("1.3.6.1.4.1.25623.1.0.109067");
  script_version("$Revision: 11843 $");
  script_tag(name:"last_modification", value:"$Date: 2018-10-11 16:33:21 +0200 (Thu, 11 Oct 2018) $");
  script_tag(name:"creation_date", value:"2018-04-17 09:42:28 +0200 (Tue, 17 Apr 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 Office: Prevent users from changing permissions on rights managed content');
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (c) 2018 Greenbone Networks GmbH");
  script_family("Policy");
  script_dependencies("secpod_ms_office_detection_900025.nasl", "os_detection.nasl");
  script_add_preference(name:"Value", type:"radio", value:"0;1");
  script_mandatory_keys("Compliance/Launch", "Host/runs_windows", "MS/Office/Ver");
  script_tag(name:"summary", value:"This test checks the setting for policy 'Prevent users from
changing permissions on rights managed content' for Microsoft Office 2013 (at least) on Windows hosts.

The setting controls whether Office users can change permissions for content that is protected with
Information Rights Management (IRM).
The Information Rights Management feature of Office allows individuals and administrators to specify
access permissions to Word documents, Excel workbooks, PowerPoint presentations, InfoPath templates
and forms, and Outlook e-mail messages. This functionality helps prevent sensitive information from
being printed, forwarded, or copied by unauthorized people.");
  exit(0);
}

include("smb_nt.inc");
include("policy_functions.inc");
include("host_details.inc");
include("secpod_smb_func.inc");
include("version_func.inc");

cpe = get_app_version(cpe:"cpe:/a:microsoft:office");
if(!cpe){
	policy_logging(text:'Not found at least Microsoft Office 2013 installation.');
	exit(0);
}
office_year = substr(cpe,0,3);

full_version = get_kb_item("MS/Office/Ver");
if(version_is_less(version:full_version, test_version:'15')){
	policy_logging(text:'Not found at least Microsoft Office 2013 installation.');
	exit(0);
}
major_version = substr(full_version,0,3);

title = 'Prevent users from changing permissions on rights managed content';
fixtext = 'Set following UI path accordingly:
User Configuration/Administrative Templates/Microsoft Office ' + office_year + '/Manage Restricted Permissions/' + title;
type = 'HKU';
key_root = 'Software\\Policies\\Microsoft\\Office\\' + major_version + '\\common\\drm';
item = 'disablecreation';
default = script_get_preference('Value');
v = make_array();

uids = registry_enum_keys(key:'SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\ProfileList', type:'HKLM');
foreach uid (uids){
  if(uid =~ "S-1-5-21-"){
    if(registry_key_exists(key:uid, type:'HKU')){
      key = uid + '\\' + key_root;
      value = registry_get_dword(key:key, item:item, type:type);
      if(!value){
        value = '0';
      }
      v = uid + ': ' + value + '\n';
      policy_set_kb_hcu(id:uid, val:value);
      if(value != default){
        compliant = 'no';
      }
    }
  }
}

if(!compliant){
  compliant = 'yes';
}

policy_logging(text:'"' + title + '" is set to: ' + v);
policy_add_oid();
policy_set_dval(dval:default);
policy_fixtext(fixtext:fixtext);
policy_control_name(title:title);
policy_set_compliance(compliant:compliant);

exit(0);