Microsoft Windows Multiple Vulnerabilities (KB4537814)

# 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("1.3.6.1.4.1.25623.1.0.815775");
  script_version("2022-08-09T10:11:17+0000");
  script_xref(name:"CISA", value:"Known Exploited Vulnerability (KEV) catalog");
  script_xref(name:"URL", value:"https://www.cisa.gov/known-exploited-vulnerabilities-catalog");
  script_cve_id("CVE-2020-0655", "CVE-2020-0657", "CVE-2020-0658", "CVE-2020-0660",
                "CVE-2020-0662", "CVE-2020-0665", "CVE-2020-0666", "CVE-2020-0667",
                "CVE-2020-0668", "CVE-2020-0673", "CVE-2020-0674", "CVE-2020-0675",
                "CVE-2020-0676", "CVE-2020-0677", "CVE-2020-0678", "CVE-2020-0679",
                "CVE-2020-0680", "CVE-2020-0681", "CVE-2020-0682", "CVE-2020-0683",
                "CVE-2020-0686", "CVE-2020-0691", "CVE-2020-0698", "CVE-2020-0703",
                "CVE-2020-0705", "CVE-2020-0706", "CVE-2020-0707", "CVE-2020-0708",
                "CVE-2020-0715", "CVE-2020-0719", "CVE-2020-0720", "CVE-2020-0721",
                "CVE-2020-0722", "CVE-2020-0723", "CVE-2020-0724", "CVE-2020-0725",
                "CVE-2020-0726", "CVE-2020-0729", "CVE-2020-0730", "CVE-2020-0731",
                "CVE-2020-0734", "CVE-2020-0735", "CVE-2020-0737", "CVE-2020-0738",
                "CVE-2020-0744", "CVE-2020-0745", "CVE-2020-0748", "CVE-2020-0752",
                "CVE-2020-0753", "CVE-2020-0754", "CVE-2020-0755", "CVE-2020-0756",
                "CVE-2020-0817");
  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:"2022-08-09 10:11:17 +0000 (Tue, 09 Aug 2022)");
  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:"2020-02-13 18:11:00 +0000 (Thu, 13 Feb 2020)");
  script_tag(name:"creation_date", value:"2020-02-12 14:50:58 +0530 (Wed, 12 Feb 2020)");
  script_name("Microsoft Windows Multiple Vulnerabilities (KB4537814)");

  script_tag(name:"summary", value:"This host is missing a critical security
  update according to Microsoft KB4537814");

  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:

  - Windows Common Log File System (CLFS) driver fails to properly handle objects
    in memory.

  - Windows Search Indexer improperly handles objects in memory.

  - Cryptography Next Generation (CNG) service improperly handles objects in memory.

  - Windows Error Reporting manager improperly handles hard links.

  - Windows Function Discovery Service improperly handles objects in memory.

  Please see the references for more information about the vulnerabilities.");

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

  script_tag(name:"affected", value:"Microsoft Windows Server 2012.");

  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/4537814");
  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");

if(hotfix_check_sp(win2012:1) <= 0){
  exit(0);
}

dllpath = smb_get_system32root();
if(!dllpath)
  exit(0);

fileVer = fetch_file_version(sysPath:dllpath, file_name:"Win32k.sys");
if(!fileVer)
  exit(0);

if(version_is_less(version:fileVer, test_version:"6.2.9200.22979")) {
  report = report_fixed_ver(file_checked:dllpath + "\Win32k.sys",
                            file_version:fileVer, vulnerable_range:"Less than 6.2.9200.22979");
  security_message(data:report);
  exit(0);
}

exit(99);