Mongoose Web Server <= 6.13 Multiple Vulnerabilities

# Copyright (C) 2021 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.
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# 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:cesanta:mongoose";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.117539");
  script_version("2021-08-26T14:01:06+0000");
  script_tag(name:"last_modification", value:"2021-08-26 14:01:06 +0000 (Thu, 26 Aug 2021)");
  script_tag(name:"creation_date", value:"2021-07-07 13:25:44 +0000 (Wed, 07 Jul 2021)");
  script_tag(name:"cvss_base", value:"6.4");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2018-12-07 18:00:00 +0000 (Fri, 07 Dec 2018)");

  script_cve_id("CVE-2018-18764", "CVE-2018-18765", "CVE-2018-19587");

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

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

  script_name("Mongoose Web Server <= 6.13 Multiple Vulnerabilities");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2021 Greenbone Networks GmbH");
  script_family("Web Servers");
  script_dependencies("gb_mongoose_web_server_http_detect.nasl");
  script_mandatory_keys("cesanta/mongoose/detected");

  script_tag(name:"summary", value:"Mongoose Web Server is prone to multiple vulnerabilities.");

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

  script_tag(name:"insight", value:"The following vulnerabilities exist:

  - CVE-2018-18764, CVE-2018-18765: arbitrary memory read vulnerabilities in the MQTT packet-parsing
  functionality

  - CVE-2018-19587: SIGSEGV exists in the mongoose.c mg_mqtt_add_session() function");

  script_tag(name:"affected", value:"Mongoose Web Server version 6.13 and prior.");

  script_tag(name:"solution", value:"No known solution was made available for at least one year
  since the disclosure of this vulnerability. Likely none will be provided anymore. General solution
  options are to upgrade to a newer release, disable respective features, remove the product or
  replace the product by another one.");

  script_xref(name:"URL", value:"https://github.com/TiffanyBlue/PoCbyMyself/tree/master/mongoose6.13/mqtt");

  exit(0);
}

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

if (!port = get_app_port(cpe: CPE))
  exit(0);

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

version = infos["version"];
location = infos["location"];

if (version_is_less_equal(version: version, test_version: "6.13")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "None", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);