Microsoft Office 2016 Defense in Depth Update (KB2920723)

###############################################################################
# OpenVAS Vulnerability Test
# $Id: gb_ms_kb2920723.nasl 7401 2017-10-11 13:55:58Z santu $
#
# Microsoft Office 2016 Defense in Depth Update (KB2920723)
#
# Authors:
# Kashinath T <[email protected]>
#
# Copyright:
# Copyright (C) 2017 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("1.3.6.1.4.1.25623.1.0.811929");
  script_version("$Revision: 7401 $");
  script_tag(name:"cvss_base", value:"10.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_tag(name:"last_modification", value:"$Date: 2017-10-11 15:55:58 +0200 (Wed, 11 Oct 2017) $");
  script_tag(name:"creation_date", value:"2017-10-11 09:44:16 +0530 (Wed, 11 Oct 2017)");
  script_name("Microsoft Office 2016 Defense in Depth Update (KB2920723)");

  script_tag(name:"summary", value:"This host is missing an important security
  update according to Microsoft KB2920723");

  script_tag(name:"vuldetect", value:"Get the vulnerable file version and
  check appropriate patch is applied or not.");

  script_tag(name:"insight", value:"Microsoft has released an update for Microsoft
  Office that provides enhanced security as a defense-in-depth measure.");

  script_tag(name:"impact", value:"Successful exploitation will allow an attacker
  to compromise on availability, confidentiality and integrity of the system.

  Impact Level: System/Application");

  script_tag(name:"affected", value:"Microsoft Office 2016");

  script_tag(name:"solution", value:"Run Windows Update and update the
  listed hotfixes or download and update mentioned hotfixes in the advisory
  from the below link,
  https://support.microsoft.com/en-us/help/2920723");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"executable_version");
  script_xref(name : "URL" , value : "https://support.microsoft.com/en-us/help/2920723");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2017 Greenbone Networks GmbH");
  script_family("Windows : Microsoft Bulletins");
  script_dependencies("secpod_office_products_version_900032.nasl");
  script_mandatory_keys("MS/Office/Ver");
  script_require_ports(139, 445);
  exit(0);
}


include("smb_nt.inc");
include("secpod_reg.inc");
include("version_func.inc");
include("secpod_smb_func.inc");

## Variable initialization
officeVer = "";
offPath = "";
offexeVer = "";
commonpath = "";

## MS Office
officeVer = get_kb_item("MS/Office/Ver");
if(!officeVer){
  exit(0);
}

## Get Office File Path
commonpath = registry_get_sz(key:"SOFTWARE\Microsoft\Windows\CurrentVersion",
                            item:"CommonFilesDir");
if(!commonpath){
  exit(0);
}

##For office 2016
if(officeVer =~ "^16\.")
{
  ## Get Version from osetup.dll
  offPath = commonpath + "\Microsoft Shared\Office16\Office Setup Controller";
  offexeVer = fetch_file_version(sysPath:offPath, file_name:"osetup.dll");

  if(offexeVer && version_in_range(version:offexeVer, test_version:"16.0", test_version2:"16.0.4600.999"))
  {
    report = 'File checked:     ' + offPath + "\osetup.dll" + '\n' +
             'File version:     ' + offexeVer  + '\n' +
             'Vulnerable range: ' + "16.0 - 16.0.4600.999" + '\n' ;
    security_message(data:report);
    exit(0);
  }
}
exit(0);