Schneider Electric Modicon Improper Check for Unusual or Exceptional Conditions (CVE-2018-7833)

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(500242);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/30");

  script_cve_id("CVE-2018-7833");

  script_name(english:"Schneider Electric Modicon Improper Check for Unusual or Exceptional Conditions (CVE-2018-7833)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"An Improper Check for Unusual or Exceptional Conditions vulnerability
exists in the embedded web servers in all Modicon M340, Premium,
Quantum PLCs and BMXNOR0200 where an unauthenticated user can send a
specially crafted XML data via a POST request to cause the web server
to become unavailable

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
  # https://download.schneider-electric.com/files?p_Doc_Ref=SESB-2018-327-01
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f5951abc");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  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:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-7833");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(754);

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/12/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/12/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/02/07");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicom_bmxnor0200h_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicom_bmxnor0200_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicom_m340_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicom_premium_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicom_quantum_firmware");
  script_set_attribute(attribute:"generated_plugin", value:"former");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Schneider');

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

var vuln_cpes = {
    "cpe:/o:schneider-electric:modicom_m340_firmware" :
        {"versionEndExcluding" : "3.20", "family" : "ModiconM340"},
    "cpe:/o:schneider-electric:modicom_premium_firmware" :
        {"family" : "Premium"},
    "cpe:/o:schneider-electric:modicom_quantum_firmware" :
        {"family" : "QuantumUnity"},
    "cpe:/o:schneider-electric:modicom_bmxnor0200h_firmware" :
        {"family" : "ModiconM340M580CP"},
    "cpe:/o:schneider-electric:modicom_bmxnor0200_firmware" :
        {"family" : "ModiconM340M580CP"}
};

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