Schneider Electric Modicon Out-of-bounds Read (CVE-2018-7845)

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

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

if (description)
{
  script_id(500309);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/24");

  script_cve_id("CVE-2018-7845");

  script_name(english:"Schneider Electric Modicon Out-of-bounds Read (CVE-2018-7845)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"A CWE-125: Out-of-bounds Read vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum,
and Modicon Premium which could cause the disclosure of unexpected data from the controller when reading specific memory
blocks in the controller over Modbus.  

This plugin only works with Tenable.ot. Please visit
https://www.tenable.com/products/tenable-ot for more information.");
  # https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0745
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?461a3547");
  # https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2019-134-11
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a432fe19");
  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:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-7845");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(125);

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/05/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/05/22");
  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:modicon_m580_series_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicon_m340_series_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicon_quantum_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicon_premium_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) 2022-2024 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:modicon_m580_series_firmware" :
        {"versionEndExcluding" : "2.80", "family" : "ModiconM580"},
    "cpe:/o:schneider-electric:modicon_m340_series_firmware" :
        {"versionEndExcluding" : "3.01", "family" : "ModiconM340"},
    "cpe:/o:schneider-electric:modicon_quantum_firmware" :
        {"versionEndExcluding" : "3.60", "family" : "QuantumUnity"},
    "cpe:/o:schneider-electric:modicon_premium_firmware" :
        {"versionEndExcluding" : "3.20", "family" : "Premium"}
};

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