MikroTik RouterOS < 6.45.5 DoS Vulnerability

# Copyright (C) 2020 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:/o:mikrotik:routeros";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.144720");
  script_version("2021-07-22T11:01:40+0000");
  script_tag(name:"last_modification", value:"2021-07-22 11:01:40 +0000 (Thu, 22 Jul 2021)");
  script_tag(name:"creation_date", value:"2020-10-08 05:18:18 +0000 (Thu, 08 Oct 2020)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-10-15 13:03:00 +0000 (Thu, 15 Oct 2020)");

  script_cve_id("CVE-2019-16160");

  script_tag(name:"qod_type", value:"remote_banner");

  script_tag(name:"solution_type", value:"VendorFix");

  script_name("MikroTik RouterOS < 6.45.5 DoS Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2020 Greenbone Networks GmbH");
  script_family("Denial of Service");
  script_dependencies("gb_mikrotik_router_routeros_consolidation.nasl");
  script_mandatory_keys("mikrotik/detected");

  script_tag(name:"summary", value:"MikroTik RouterOS is prone to a denial of service vulnerability due to an
  integer overflow in the SMB server.");

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

  script_tag(name:"affected", value:"MikroTik RouterOS prior to version 6.45.5.");

  script_tag(name:"solution", value:"Update to version 6.45.5 or later.");

  script_xref(name:"URL", value:"https://forum.mikrotik.com/viewtopic.php?t=151603");
  script_xref(name:"URL", value:"https://gist.github.com/thebabush/3c71fc5001f8865e3ad579e80680ce24");

  exit(0);
}

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

if (!version = get_app_version(cpe: CPE, nofork: TRUE))
  exit(0);

if (version_is_less(version: version, test_version: "6.45.5")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "6.45.5");
  security_message(port: 0, data: report);
  exit(0);
}

exit(99);