Microsoft Windows Multiple Vulnerabilities (KB5006743)

# SPDX-FileCopyrightText: 2021 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("1.3.6.1.4.1.25623.1.0.818808");
  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-2021-26442", "CVE-2021-36953", "CVE-2021-36970", "CVE-2021-38662",
                "CVE-2021-38663", "CVE-2021-40443", "CVE-2021-40449", "CVE-2021-40455",
                "CVE-2021-40460", "CVE-2021-40465", "CVE-2021-40466", "CVE-2021-40467",
                "CVE-2021-40469", "CVE-2021-40489", "CVE-2021-41331", "CVE-2021-41332",
                "CVE-2021-41335", "CVE-2021-41340", "CVE-2021-41342", "CVE-2021-41343");
  script_tag(name:"cvss_base", value:"7.2");
  script_tag(name:"cvss_base_vector", value:"AV:L/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:"2021-10-19 17:19:00 +0000 (Tue, 19 Oct 2021)");
  script_tag(name:"creation_date", value:"2021-10-13 09:32:30 +0530 (Wed, 13 Oct 2021)");
  script_name("Microsoft Windows Multiple Vulnerabilities (KB5006743)");

  script_tag(name:"summary", value:"This host is missing a critical security
  update according to Microsoft KB5006743");

  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 in Windows exFAT File System.

  - An error in Windows Fast FAT File System Driver.

  - A error in Windows Remote Procedure Call Runtime.

  - An error in Windows Media Audio Decoder.

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

  script_tag(name:"impact", value:"Successful exploitation will allow an attacker
  to disclose sensitive information, perform remote code execution, cause
  denial of service condition, conduct spoofing and elevate privileges.");

  script_tag(name:"affected", value:"- Microsoft Windows Server 2008 R2 for x64-based Systems Service Pack 1

  - Microsoft Windows 7 for x64-based Systems Service Pack 1

  - Microsoft Windows 7 for 32-bit Systems Service Pack 1");

  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/5006743");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2021 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(win2008r2:2, win7x64:2, win7:2) <= 0){
  exit(0);
}

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

fileVer = fetch_file_version(sysPath:dllPath, file_name:"advapi32.dll");
if(!fileVer){
  exit(0);
}

if(version_is_less(version:fileVer, test_version:"6.1.7601.25740"))
{
  report = report_fixed_ver(file_checked:dllPath + "\advapi32.dll",
                            file_version:fileVer, vulnerable_range:"Less than 6.1.7601.25740");
  security_message(data:report);
  exit(0);
}
exit(99);