Microsoft Windows Multiple Vulnerabilities (KB4580347)

# Copyright (C) 2020 Greenbone Networks GmbH
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# 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("1.3.6.1.4.1.25623.1.0.817510");
  script_version("2021-08-11T08:56:08+0000");
  script_cve_id("CVE-2020-16887", "CVE-2020-16889", "CVE-2020-16891", "CVE-2020-16892",
                "CVE-2020-16896", "CVE-2020-16897", "CVE-2020-16900", "CVE-2020-16902",
                "CVE-2020-16911", "CVE-2020-16914", "CVE-2020-16916", "CVE-2020-16920",
                "CVE-2020-16922", "CVE-2020-16923", "CVE-2020-16924", "CVE-2020-16927",
                "CVE-2020-16935", "CVE-2020-16939", "CVE-2020-16940", "CVE-2020-16980");
  script_tag(name:"cvss_base", value:"9.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_tag(name:"last_modification", value:"2021-08-11 08:56:08 +0000 (Wed, 11 Aug 2021)");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-10-20 14:06:00 +0000 (Tue, 20 Oct 2020)");
  script_tag(name:"creation_date", value:"2020-10-14 12:13:17 +0530 (Wed, 14 Oct 2020)");
  script_name("Microsoft Windows Multiple Vulnerabilities (KB4580347)");

  script_tag(name:"summary", value:"This host is missing a critical security
  update according to Microsoft KB4580347");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present
  on the target host.");

  script_tag(name:"insight", value:"Multiple flaws exist due to:

  - An error when the Windows Network Connections Service handles objects
    in memory.

  - An error when the Windows KernelStream fails to properly handles objects
    in memory.

  - An error when Windows Hyper-V on a host server fails to properly validate
    input from an authenticated user on a guest operating system.

  - An error when NetBIOS over TCP (NBT) Extensions (NetBT) improperly handle
    objects in memory.

  - An error when the Windows Event System improperly handles objects in memory.

  For more information about the vulnerabilities refer to Reference links.");

  script_tag(name:"impact", value:"Successful exploitation will allow an attacker
  to execute arbitrary code, elevate privilges and disclose sensitive information.");

  script_tag(name:"affected", value:"- Microsoft Windows 8.1 for 32-bit systems

  - Microsoft Windows 8.1 for x64-based systems

  - Microsoft Windows Server 2012 R2");

  script_tag(name:"solution", value:"The vendor has released updates. Please see
  the references for more information.");

  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/4580347");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2020 Greenbone Networks GmbH");
  script_family("Windows : Microsoft Bulletins");
  script_dependencies("smb_reg_service_pack.nasl");
  script_require_ports(139, 445);
  script_mandatory_keys("SMB/WindowsVersion");
  exit(0);
}

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

fileVer = "";
dllPath = "";
report = "";

if(hotfix_check_sp(win8_1:1, win8_1x64:1, win2012R2:1) <= 0){
  exit(0);
}

dllPath = smb_get_system32root();
if(!dllPath ){
  exit(0);
}

fileVer = fetch_file_version(sysPath:dllPath, file_name:"Gpedit.dll");
if(!fileVer){
  exit(0);
}

if(version_is_less(version:fileVer, test_version:"6.3.9600.19847"))
{
  report = report_fixed_ver(file_checked:dllPath + "\Gpedit.dll",
                            file_version:fileVer, vulnerable_range:"Less than 6.3.9600.19847");
  security_message(data:report);
  exit(0);
}
exit(99);