Cesanta Mongoose Web Server < 7.10 Improper Input Validation 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("1.3.6.1.4.1.25623.1.0.126425");
  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:"2023-06-27 10:13:56 +0000 (Tue, 27 Jun 2023)");
  script_tag(name:"cvss_base", value:"7.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");
  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:"2023-07-10 16:03:00 +0000 (Mon, 10 Jul 2023)");

  script_cve_id("CVE-2023-34188");

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

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

  script_name("Cesanta Mongoose Web Server < 7.10 Improper Input Validation 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 an improper input
  validation vulnerability.");

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

  script_tag(name:"insight", value:"The HTTP server accepts requests containing negative
  Content-Length headers.");

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

  script_tag(name:"solution", value:"Update to version 7.10 or later.");

  script_xref(name:"URL", value:"https://github.com/cesanta/mongoose/pull/2197");

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

exit( 99 );