Moxa NPort Information Disclosure (CVE-2020-12117)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(501505);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/08/03");

  script_cve_id("CVE-2020-12117");

  script_name(english:"Moxa NPort Information Disclosure (CVE-2020-12117)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"Moxa Service in Moxa NPort 5150A firmware version 1.5 and earlier
allows attackers to obtain sensitive configuration values via a
crafted packet to UDP port 4800. NOTE: Moxa Service is an
unauthenticated service that runs upon a first-time installation but
can be disabled without ill effect.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
  # https://www.moxa.com/en/support/support/security-advisory/nport-5100a-series-serial-device-servers-vulnerability
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?efc47617");
  # https://blog.scadafence.com/technical-blog-cve-2020-12117-industrial-iot-insecure-default-configurations
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?28498dfa");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-12117");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(306);

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/05/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/05/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/08/02");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:moxa:nport_5100a_firmware");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Tenable.ot");

  script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("tenable_ot_api_integration.nasl");
  script_require_keys("Tenable.ot/Moxa");

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Moxa');

var asset = tenable_ot::assets::get(vendor:'Moxa');

var vuln_cpes = {
    "cpe:/o:moxa:nport_5100a_firmware" :
        {"versionEndIncluding" : "1.5", "family" : "NPort"}
};

tenable_ot::cve::compare_and_report(asset:asset, cpes:vuln_cpes, severity:SECURITY_WARNING);