Microsoft SharePoint Foundation 2013 Service Pack 1 Elevation of Privilege Vulnerability (KB4018398)

# SPDX-FileCopyrightText: 2018 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("1.3.6.1.4.1.25623.1.0.813179");
  script_version("2023-07-20T05:05:17+0000");
  script_cve_id("CVE-2018-8155");
  script_tag(name:"cvss_base", value:"3.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:S/C:N/I:P/A:N");
  script_tag(name:"last_modification", value:"2023-07-20 05:05:17 +0000 (Thu, 20 Jul 2023)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2018-06-05 19:38:00 +0000 (Tue, 05 Jun 2018)");
  script_tag(name:"creation_date", value:"2018-05-09 11:17:23 +0530 (Wed, 09 May 2018)");
  script_name("Microsoft SharePoint Foundation 2013 Service Pack 1 Elevation of Privilege Vulnerability (KB4018398)");

  script_tag(name:"summary", value:"This host is missing an important security
  update according to Microsoft KB4018398");

  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 SharePoint
  Server does not properly sanitize a specially crafted web request to an
  affected SharePoint server.");

  script_tag(name:"impact", value:"Successful exploitation will allow an attacker
  to gain elevated privileges on affected system.");

  script_tag(name:"affected", value:"Microsoft SharePoint Foundation 2013 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/4018398");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2018 Greenbone AG");
  script_family("Windows : Microsoft Bulletins");
  script_dependencies("gb_ms_sharepoint_sever_n_foundation_detect.nasl");
  script_mandatory_keys("MS/SharePoint/Foundation/Ver");
  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(!infos = get_app_version_and_location( cpe:'cpe:/a:microsoft:sharepoint_foundation', exit_no_version:TRUE ) ) exit(0);

shareVer = infos['version'];
if(shareVer !~ "^15\."){
  exit(0);
}

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

if(!os_arch = get_kb_item("SMB/Windows/Arch")){
  exit(0);
}

if("x86" >< os_arch){
  key_list = make_list("SOFTWARE\Microsoft\Windows\CurrentVersion");
}
else if("x64" >< os_arch){
  key_list =  make_list("SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion",
                        "SOFTWARE\Microsoft\Windows\CurrentVersion");
}

foreach key(key_list)
{
  path = registry_get_sz(key:key, item:"CommonFilesDir");

  if(path)
  {
    path = path + "\microsoft shared\SERVER15\Server Setup Controller";

    dllVer = fetch_file_version(sysPath:path, file_name:"Wsssetup.dll");
    if(!dllVer){
      continue;
    }
    if(dllVer =~ "^15\.")
    {
      if(version_is_less(version:dllVer, test_version:"15.0.5031.1000"))
      {
        report = report_fixed_ver(file_checked:path + "\Wsssetup.dll",
                                  file_version:dllVer, vulnerable_range:" 15 - 15.0.5031.0999");
        security_message(data:report);
        exit(0);
      }
    }
  }
}
exit(99);