Microsoft SharePoint Enterprise Server 2016 Remote Code Execution Vulnerability (KB4011217)

# 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

CPE = "cpe:/a:microsoft:sharepoint_server";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.811863");
  script_version("2025-08-05T05:45:17+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-2017-11826");
  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:"2025-08-05 05:45:17 +0000 (Tue, 05 Aug 2025)");
  script_tag(name:"severity_vector", value:"CVSS:3.1/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:"2024-07-16 17:25:46 +0000 (Tue, 16 Jul 2024)");
  script_tag(name:"creation_date", value:"2017-10-11 10:16:39 +0530 (Wed, 11 Oct 2017)");
  script_name("Microsoft SharePoint Enterprise Server 2016 Remote Code Execution Vulnerability (KB4011217)");

  script_tag(name:"summary", value:"This host is missing an important security
  update according to Microsoft KB4011217");

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

  script_tag(name:"insight", value:"The flaw exists when Microsoft Office
  software fails to properly handle objects in memory.");

  script_tag(name:"impact", value:"Successful exploitation will allow
  an attacker who successfully exploited the vulnerability to run arbitrary
  code in the context of the current user.");

  script_tag(name:"affected", value:"Microsoft SharePoint Enterprise Server 2016.");

  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/4011217");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/101219");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_family("Windows : Microsoft Bulletins");
  script_dependencies("gb_microsoft_sharepoint_smb_login_detect.nasl");
  script_mandatory_keys("microsoft/sharepoint/server/smb-login/detected");
  script_require_ports(139, 445);
  exit(0);
}

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

if(isnull(port = get_app_port(cpe:CPE, service:"smb-login")))
  exit(0);

if(!infos = get_app_version_and_location(cpe:CPE, port:port, exit_no_version:TRUE))
  exit(0);

shareVer = infos["version"];
path = infos["location"];
if(!path || "Could not find the install location" >< path){
  exit(0);
}

if(shareVer =~ "^16\.")
{
  path = registry_get_sz(key:"SOFTWARE\Microsoft\Windows\CurrentVersion",
                         item:"CommonFilesDir");
  if(path)
  {
    path = path + "\microsoft shared\Web Server Extensions\16\BIN";

    dllVer = fetch_file_version(sysPath:path, file_name:"Onetutil.dll");

    if(dllVer && version_in_range(version:dllVer, test_version:"16.0", test_version2:"16.0.4600.0999"))
    {
      report = 'File checked:     ' +  path + "\Onetutil.dll"+ '\n' +
               'File version:     ' +  dllVer  + '\n' +
               'Vulnerable range: 16.0 - 16.0.4600.0999' + '\n' ;
      security_message(port:port, data:report);
      exit(0);
    }
  }
}

exit(99);