Advantech MESR901 Detection

# SPDX-FileCopyrightText: 2017 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

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.106842");
  script_version("2023-07-25T05:05:58+0000");
  script_tag(name:"last_modification", value:"2023-07-25 05:05:58 +0000 (Tue, 25 Jul 2023)");
  script_tag(name:"creation_date", value:"2017-06-02 10:27:11 +0700 (Fri, 02 Jun 2017)");
  script_tag(name:"cvss_base", value:"0.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:N");

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

  script_name("Advantech MESR901 Detection");

  script_tag(name:"summary", value:"Detection of Advantech MESR901 Industrial Modbus Copper Ethernet to
Serial Gateway.

The script sends a connection request to the server and attempts to detect Advantech MESR901 Modbus Gateway
devices and to extract its firmware version.");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_family("Product detection");
  script_dependencies("find_service.nasl", "httpver.nasl", "global_settings.nasl");
  script_require_ports("Services/www", 80);
  script_exclude_keys("Settings/disable_cgi_scanning");

  script_xref(name:"URL", value:"http://www.advantech.com");

  exit(0);
}

include("cpe.inc");
include("http_func.inc");
include("http_keepalive.inc");
include("port_service_func.inc");
include("host_details.inc");

port = http_get_port(default: 80);

res = http_get_cache(port: port, item: "/login.html");

if ("<title>MESR901" >< res && "Modbus Gateway - Login Page" >< res && 'ID="DeviceName"' >< res) {
  version = "unknown";

  vers = eregmatch(pattern: "Firmware Version:.([0-9.]+)", string: res);
  if (!isnull(vers[1])) {
    version = vers[1];
    set_kb_item(name: "advantech_mesr901/version", value: version);
  }

  set_kb_item(name: "advantech_mesr901/detected", value: TRUE);

  cpe = build_cpe(value: version, exp: "^([0-9.]+)", base: "cpe:/a:advantech:mesr901:");
  if (!cpe)
    cpe = 'cpe:/a:advantech:mesr901';

  register_product(cpe: cpe, location: "/", port: port, service: "www");

  log_message(data: build_detection_report(app: "Advantech MESR901 Modbus Gateway", version: version, install: "/",
                                           cpe: cpe, concluded: vers[0]),
              port: port);
  exit(0);
}

exit(0);