Cesanta Mongoose Web Server 7.10 Heap-based Buffer Overflow Vulnerability

# SPDX-FileCopyrightText: 2023 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:cesanta:mongoose";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.104894");
  script_version("2025-10-03T05:38:37+0000");
  script_tag(name:"last_modification", value:"2025-10-03 05:38:37 +0000 (Fri, 03 Oct 2025)");
  script_tag(name:"creation_date", value:"2023-08-10 06:51:54 +0000 (Thu, 10 Aug 2023)");
  script_tag(name:"cvss_base", value:"8.3");
  script_tag(name:"cvss_base_vector", value:"AV:A/AC:L/Au:N/C:C/I:C/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2023-08-16 20:49:00 +0000 (Wed, 16 Aug 2023)");

  script_cve_id("CVE-2023-2905");

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

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

  script_name("Cesanta Mongoose Web Server 7.10 Heap-based Buffer Overflow Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2023 Greenbone AG");
  script_family("Web Servers");
  script_dependencies("gb_mongoose_web_server_http_detect.nasl");
  script_mandatory_keys("cesanta/mongoose/detected");

  script_tag(name:"summary", value:"Cesanta Mongoose Web Server is prone to a heap-based buffer
  overflow vulnerability.");

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

  script_tag(name:"insight", value:"Due to a failure in validating the length of a provided
  MQTT_CMD_PUBLISH parsed message with a variable length header, Cesanta Mongoose is susceptible to
  a heap-based buffer overflow vulnerability in the default configuration.");

  script_tag(name:"affected", value:"Cesanta Mongoose Web Server version 7.10 only.");

  script_tag(name:"solution", value:"Update to version 7.11 or later.");

  script_xref(name:"URL", value:"https://takeonme.org/cves/CVE-2023-2905.html");
  script_xref(name:"URL", value:"https://github.com/cesanta/mongoose/pull/2274");

  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_equal( version: version, test_version: "7.10" ) ) {
  report = report_fixed_ver( installed_version: version, fixed_version: "7.11", install_path: location );
  security_message( port: port, data: report );
  exit( 0 );
}

exit( 99 );