Microsoft Windows Multiple Remote Code Execution Vulnerabilities (KB4507434)

# Copyright (C) 2019 Greenbone Networks GmbH
# 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-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

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

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.815512");
  script_version("2021-09-06T12:01:32+0000");
  script_cve_id("CVE-2019-1001", "CVE-2019-1004", "CVE-2019-1056", "CVE-2019-1059",
                "CVE-2019-1063", "CVE-2019-1104");
  script_tag(name:"cvss_base", value:"7.6");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:H/Au:N/C:C/I:C/A:C");
  script_tag(name:"last_modification", value:"2021-09-06 12:01:32 +0000 (Mon, 06 Sep 2021)");
  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:"2019-07-10 12:24:06 +0530 (Wed, 10 Jul 2019)");
  script_name("Microsoft Windows Multiple Remote Code Execution Vulnerabilities (KB4507434)");

  script_tag(name:"summary", value:"This host is missing a critical security
  update according to Microsoft KB4507434");

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

  script_tag(name:"insight", value:"Multiple flaws are due to:

  - Scripting engine improperly handles objects in memory in Microsoft browsers.

  - Microsoft browsers improperly access objects in memory.");

  script_tag(name:"impact", value:"Successful exploitation will allow an attacker
  to execute arbitrary code in the context of the current user. An attacker who
  successfully exploited the vulnerabilities could gain the same user rights as the
  current user and execute arbitrary code.");

  script_tag(name:"affected", value:"Internet Explorer 11 on 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/4507434");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2019 Greenbone Networks GmbH");
  script_family("Windows : Microsoft Bulletins");
  script_dependencies("smb_reg_service_pack.nasl", "gb_ms_ie_detect.nasl");
  script_require_ports(139, 445);
  script_mandatory_keys("SMB/WindowsVersion", "MS/IE/Version");
  exit(0);
}

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

if(hotfix_check_sp(win2012:1) <= 0){
  exit(0);
}

ieVer = get_app_version(cpe:CPE);
if(!ieVer || ieVer !~ "^11\."){
  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(version_is_less(version:iedllVer, test_version:"11.0.9600.19400"))
{
  report = report_fixed_ver(file_checked:iePath + "\Mshtml.dll",
                            file_version:iedllVer, vulnerable_range:"Less than 11.0.9600.19400");
  security_message(data:report);
  exit(0);
}
exit(0);