Microsoft .NET Framework Remote Code Execution Vulnerability (KB4040979)

# SPDX-FileCopyrightText: 2017 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("1.3.6.1.4.1.25623.1.0.811816");
  script_version("2023-07-25T05:05:58+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-2017-8759");
  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:"2023-07-25 05:05:58 +0000 (Tue, 25 Jul 2023)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:L/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:"2018-01-14 02:29:00 +0000 (Sun, 14 Jan 2018)");
  script_tag(name:"creation_date", value:"2017-09-13 09:32:37 +0530 (Wed, 13 Sep 2017)");
  script_name("Microsoft .NET Framework Remote Code Execution Vulnerability (KB4040979)");

  script_tag(name:"summary", value:"This host is missing an important security
  update according to Microsoft KB4040979");

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

  script_tag(name:"insight", value:"The flaw exists due to an improper
  processing of untrusted input.");

  script_tag(name:"impact", value:"Successful exploitation will allow
  an attacker to take control of an affected system. An attacker could then
  install programs, view, change, or delete data, or create new accounts with
  full user rights. Users whose accounts are configured to have fewer user rights
  on the system could be less impacted than users who operate with administrative
  user rights.");

  script_tag(name:"affected", value:"Microsoft .NET Framework 3.5 on 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/4040979");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/100742");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2017 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(win2012:1) <= 0){
  exit(0);
}

key = "SOFTWARE\Microsoft\ASP.NET\";
if(!registry_key_exists(key:key)){
  exit(0);
}
foreach item (registry_enum_keys(key:key))
{
  dotPath = registry_get_sz(key:key + item, item:"Path");
  if(dotPath && "\Microsoft.NET\Framework" >< dotPath)
  {
    sysdllVer = fetch_file_version(sysPath:dotPath, file_name:"System.management.dll");
    if(sysdllVer)
    {
      ## .NET Framework 3.5
      if(version_in_range(version:sysdllVer, test_version:"2.0.50727.5700", test_version2:"2.0.50727.8765"))
      {
        report = 'File checked:     ' + dotPath + "\System.management.dll" + '\n' +
                 'File version:     ' + sysdllVer  + '\n' +
                 'Vulnerable range:  2.0.50727.5700 - 2.0.50727.8765\n' ;
        security_message(data:report);
        exit(0);
      }
    }
  }
}
exit(0);