Hughes Broadband Satellite Modems Multiple Vulnerabilities

# SPDX-FileCopyrightText: 2018 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:hughes:broadband_satelite_modem";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.813749");
  script_version("2023-07-20T05:05:17+0000");
  script_cve_id("CVE-2016-9497", "CVE-2016-9496", "CVE-2016-9494", "CVE-2016-9495");
  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:"last_modification", value:"2023-07-20 05:05:17 +0000 (Thu, 20 Jul 2023)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/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:"2019-10-09 23:20:00 +0000 (Wed, 09 Oct 2019)");
  script_tag(name:"creation_date", value:"2018-08-08 14:01:09 +0530 (Wed, 08 Aug 2018)");
  script_name("Hughes Broadband Satellite Modems Multiple Vulnerabilities");

  script_tag(name:"summary", value:"Hughes Broadband Satellite Modem is prone to multiple vulnerabilities.");

  script_tag(name:"vuldetect", value:"Send a telnet connection request and check
  whether it is possible to access device without credentials.");

  script_tag(name:"insight", value:"Multiple flaws exist due to:

  - An error in the device's advanced status web page that is linked to from
    the basic status web page does not appear to properly parse malformed GET
    requests.

  - Use of Hard-coded Credentials.

  - Missing Authentication for Critical Function.

  - An Alternate Path or Channel. By default, port 1953 is accessible via telnet
    and does not require authentication.");

  script_tag(name:"impact", value:"Successful exploitation will allow remote
  attackers to conduct a denial-of-service condition, gain access to the device's
  default telnet port 23 and telnet port 1953 and cause modem to reboot.");

  script_tag(name:"affected", value:"Hughes Broadband Satellite Modem models
  HN7740S, DW7000 and HN7000S/SM. Other models may also be affected.");

  script_tag(name:"solution", value:"Upgrade Hughes Broadband Satellite Modem
  to firmware version 6.9.0.34 or higher, and configure to prevent exploit of the
  listed potential vulnerabilities. Please see the references for more information.");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"remote_vul");
  script_xref(name:"URL", value:"https://www.kb.cert.org/vuls/id/614751");
  script_category(ACT_ATTACK);
  script_copyright("Copyright (C) 2018 Greenbone AG");
  script_family("General");
  script_dependencies("gb_hughes_broadband_satellite_modems_detect.nasl");
  script_mandatory_keys("hughes_broadband_satelite_modem/detected");
  script_require_ports("Services/telnet", 1953);
  exit(0);
}

include("telnet_func.inc");
include("host_details.inc");
include("misc_func.inc");
include("port_service_func.inc");

port = telnet_get_port( default:1953);

if(!soc = open_sock_tcp(port))
  exit(0);

recv = recv(socket:soc, length:4096, timeout:10);
if("Broadband Satellite" >< recv && "Hughes Network Systems" >< recv
   && "Install Console" >< recv && "Main Menu" >< recv) {
  send(socket:soc, data:'\r\n');
  recv = recv( socket:soc, length:4096, timeout:10 );
  close(soc);

  if("Display Current Configuration" >< recv &&
     "Display Satellite Interface Statistics" >< recv &&
     "Gateway Reset" >< recv && "Gateway Unlicense" >< recv &&
     "Display Active Routing" >< recv) {
    report = "It was possible to gain unrestricted telnet access without entering credentials.";
    security_message(port:port, data:report);
    exit(0);
  }
  exit(99);
}

exit(0);