Microsoft Windows Multiple Vulnerabilities (KB5020023)

# SPDX-FileCopyrightText: 2022 Greenbone AG
# 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-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.826614");
  script_version("2025-11-14T15:41:06+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-2022-23824", "CVE-2022-37966", "CVE-2022-37967", "CVE-2022-37992",
                "CVE-2022-38023", "CVE-2022-41039", "CVE-2022-41045", "CVE-2022-41047",
                "CVE-2022-41048", "CVE-2022-41053", "CVE-2022-41056", "CVE-2022-41057",
                "CVE-2022-41058", "CVE-2022-41073", "CVE-2022-41086", "CVE-2022-41088",
                "CVE-2022-41090", "CVE-2022-41093", "CVE-2022-41095", "CVE-2022-41097",
                "CVE-2022-41098", "CVE-2022-41100", "CVE-2022-41109", "CVE-2022-41118",
                "CVE-2022-41125", "CVE-2022-41128");
  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:"2025-11-14 15:41:06 +0000 (Fri, 14 Nov 2025)");
  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:"2022-11-10 14:38:00 +0000 (Thu, 10 Nov 2022)");
  script_tag(name:"creation_date", value:"2022-11-09 09:27:51 +0530 (Wed, 09 Nov 2022)");
  script_name("Microsoft Windows Multiple Vulnerabilities (KB5020023)");

  script_tag(name:"summary", value:"This host is missing an important security
  update according to Microsoft KB5020023");

  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 elevation of privilege vulnerability in Windows Kerberos RC4-HMAC.

  - A Remote Code Execution Vulnerability in Windows Point-to-Point Tunneling
  Protocol.

  - A Denial of Service Vulnerability in Windows Point-to-Point Tunneling
  Protocol.

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

  script_tag(name:"impact", value:"Successful exploitation will allow an
  attacker to elevate privileges, execute arbitrary commands, disclose
  information and conduct DoS attacks.");

  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/5020023");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2022 Greenbone AG");
  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(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:"ntoskrnl.exe");
if(!fileVer){
  exit(0);
}

if(version_is_less(version:fileVer, test_version:"6.3.9600.20666"))
{
  report = report_fixed_ver(file_checked:dllPath + "\Ntoskrnl.exe",
                            file_version:fileVer, vulnerable_range:"Less than 6.3.9600.20666");
  security_message(data:report);
  exit(0);
}
exit(99);