Microsoft Windows Internet Explorer Multiple RCE Vulnerabilities (KB4074736)

# 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

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

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.812765");
  script_version("2023-07-20T05:05:17+0000");
  script_cve_id("CVE-2018-0840", "CVE-2018-0866");
  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:"2023-07-20 05:05:17 +0000 (Thu, 20 Jul 2023)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:H/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:"2020-08-24 17:37:00 +0000 (Mon, 24 Aug 2020)");
  script_tag(name:"creation_date", value:"2018-02-14 08:59:04 +0530 (Wed, 14 Feb 2018)");
  script_name("Microsoft Windows Internet Explorer Multiple RCE Vulnerabilities (KB4074736)");

  script_tag(name:"summary", value:"This host is missing a critical security
  update according to Microsoft KB4074736");

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

  script_tag(name:"insight", value:"Multiple flaws exist because scripting
  engine improperly handles objects in memory in Microsoft browsers.");

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

  script_tag(name:"affected", value:"Microsoft Internet Explorer version 9.x, 10.x and 11.x.");

  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/4074736");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2018 Greenbone AG");
  script_family("Windows : Microsoft Bulletins");
  script_dependencies("gb_ms_ie_detect.nasl");
  script_require_ports(139, 445);
  script_mandatory_keys("MS/IE/Version");
  exit(0);
}

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

if(hotfix_check_sp(win2008:3, win2008x64:3, win7:2, win7x64:2, win2008r2:2, win2012:1,  win2012R2:1,
                   win8_1:1, win8_1x64:1) <= 0){
  exit(0);
}

ieVer = get_app_version(cpe:CPE, nofork: TRUE);
if(!ieVer || ieVer !~ "^(9|1[01])\."){
  exit(0);
}

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

iedllVer = fetch_file_version(sysPath:iePath, file_name:"Mshtml.dll");
if(!iedllVer){
  exit(0);
}

if(hotfix_check_sp(win2008:3, win2008x64:3) > 0)
{
  if(version_is_less(version:iedllVer, test_version:"9.0.8112.21109")){
    Vulnerable_range = "Less than 9.0.8112.21109";
  }
}

else if(hotfix_check_sp(win2012:1) > 0)
{
  if(version_is_less(version:iedllVer, test_version:"10.0.9200.22353")){
    Vulnerable_range = "Less than 10.0.9200.22353";
  }
}

else if(hotfix_check_sp(win8_1:1, win8_1x64:1, win2012R2:1, win7:2, win7x64:2, win2008r2:2) > 0)
{
  if(version_is_less(version:iedllVer, test_version:"11.0.9600.18921")){
     Vulnerable_range = "Less than 11.0.9600.18921";
  }
}

if(Vulnerable_range)
{
  report = report_fixed_ver(file_checked:iePath + "\Mshtml.dll",
                            file_version:iedllVer, vulnerable_range:Vulnerable_range);
  security_message(data:report);
  exit(0);
}
exit(0);