MongoDB 3.4 < 3.4.24, 3.6 < 3.6.15, 4.0 < 4.0.13, 4.2 < 4.2.1 DoS Vulnerability - Linux

# SPDX-FileCopyrightText: 2020 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("1.3.6.1.4.1.25623.1.0.144957");
  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:"2020-12-02 06:25:14 +0000 (Wed, 02 Dec 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:"2020-12-03 17:31:00 +0000 (Thu, 03 Dec 2020)");

  script_cve_id("CVE-2019-20925");

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

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

  script_name("MongoDB 3.4 < 3.4.24, 3.6 < 3.6.15, 4.0 < 4.0.13, 4.2 < 4.2.1 DoS Vulnerability - Linux");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2020 Greenbone AG");
  script_family("Databases");
  script_dependencies("gb_mongodb_wire_protocol_detect.nasl", "os_detection.nasl");
  script_mandatory_keys("mongodb/detected", "Host/runs_unixoide");

  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:"An unauthenticated client can trigger denial of service by issuing specially
  crafted wire protocol messages, which cause the message decompressor to incorrectly allocate memory.");

  script_tag(name:"affected", value:"MongoDB versions 3.4 prior to 3.4.24, 3.6 prior to 3.6.15, 4.0 prior to 4.0.13
  and 4.2.0.");

  script_tag(name:"solution", value:"Update to version 3.4.24, 3.6.15, 4.0.13, 4.2.1 or later.");

  script_xref(name:"URL", value:"https://jira.mongodb.org/browse/SERVER-43751");

  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: "3.4", test_version2: "3.4.23")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "3.4.24");
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "3.6", test_version2: "3.6.14")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "3.6.15");
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "4.0", test_version2: "4.0.12")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "4.0.13");
  security_message(port: port, data: report);
  exit(0);
}

if (version == "4.2.0") {
  report = report_fixed_ver(installed_version: version, fixed_version: "4.2.1");
  security_message(port: port, data: report);
  exit(0);
}

exit(99);