MongoDB DoS Vulnerability (SERVER-51083) - Windows

# SPDX-FileCopyrightText: 2021 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:mongodb:mongodb";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.145476");
  script_version("2026-01-09T05:47:51+0000");
  script_tag(name:"last_modification", value:"2026-01-09 05:47:51 +0000 (Fri, 09 Jan 2026)");
  script_tag(name:"creation_date", value:"2021-03-02 04:50:59 +0000 (Tue, 02 Mar 2021)");
  script_tag(name:"cvss_base", value:"4.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:N/I:N/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-03-08 15:40:00 +0000 (Mon, 08 Mar 2021)");

  script_cve_id("CVE-2020-7929");

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

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

  script_name("MongoDB DoS Vulnerability (SERVER-51083) - Windows");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2021 Greenbone AG");
  script_family("Databases");
  script_dependencies("gb_mongodb_wire_protocol_detect.nasl", "os_detection.nasl");
  script_mandatory_keys("mongodb/detected", "Host/runs_windows");

  script_tag(name:"summary", value:"MongoDB is prone to a denial of service (DoS) vulnerability.");

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

  script_tag(name:"insight", value:"A user authorized to perform database queries may trigger denial of service
  by issuing specially crafted query contain a type of regex.");

  script_tag(name:"affected", value:"MongoDB versions 3.6.x - 3.6.20 and 4.0.x - 4.0.20.");

  script_tag(name:"solution", value:"Update to version 3.6.21, 4.0.21 or later.");

  script_xref(name:"URL", value:"https://jira.mongodb.org/browse/SERVER-51083");

  exit(0);
}

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

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

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

if (version_in_range(version: version, test_version: "3.6.0", test_version2: "3.6.20")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "3.6.21");
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "4.0.0", test_version2: "4.0.20")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "4.0.21");
  security_message(port: port, data: report);
  exit(0);
}

exit(99);