Eaton easyE4 PLC Inadequate Encryption Strength (CVE-2023-43776)

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

include('compat.inc');

if (description)
{
  script_id(501761);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/21");

  script_cve_id("CVE-2023-43776");

  script_name(english:"Eaton easyE4 PLC Inadequate Encryption Strength (CVE-2023-43776)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"Eaton easyE4 PLC offers a device password protection functionality to
facilitate a secure connection and prevent unauthorized access. It was
observed that the device password was stored with a weak encoding
algorithm in the easyE4 program file when exported to SD card (*.PRG
file ending).

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
  # https://www.eaton.com/content/dam/eaton/company/news-insights/cybersecurity/security-bulletins/etn-va-2023-1010.pdf
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?02516ed8");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/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-2023-43776");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(326);

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/10/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/10/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/10/25");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:eaton:easy-e4-ac-12rc1p_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:eaton:easy-e4-ac-12rcx1p_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:eaton:easy-e4-ac-16re1p_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:eaton:easy-e4-dc-12tc1p_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:eaton:easy-e4-dc-12tcx1p_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:eaton:easy-e4-dc-16te1p_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:eaton:easy-e4-dc-4pe1p_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:eaton:easy-e4-dc-6ae1p_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:eaton:easy-e4-dc-8te1p_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:eaton:easy-e4-uc-12rc1p_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:eaton:easy-e4-uc-12rcx1p_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:eaton:easy-e4-uc-16re1_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:eaton:easy-e4-uc-16re1p_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:eaton:easy-e4-uc-8re1p_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:eaton:easy_e4-ac-8re1p_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) 2023-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Eaton');

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

var vuln_cpes = {
    "cpe:/o:eaton:easy-e4-ac-12rc1p_firmware" :
        {"versionEndExcluding" : "2.02", "family" : "PLCEasyE4"},
    "cpe:/o:eaton:easy-e4-ac-12rcx1p_firmware" :
        {"versionEndExcluding" : "2.02", "family" : "PLCEasyE4"},
    "cpe:/o:eaton:easy-e4-ac-16re1p_firmware" :
        {"versionEndExcluding" : "2.02", "family" : "PLCEasyE4"},
    "cpe:/o:eaton:easy_e4-ac-8re1p_firmware" :
        {"versionEndExcluding" : "2.02", "family" : "PLCEasyE4"},
    "cpe:/o:eaton:easy-e4-dc-12tc1p_firmware" :
        {"versionEndExcluding" : "2.02", "family" : "PLCEasyE4"},
    "cpe:/o:eaton:easy-e4-dc-12tcx1p_firmware" :
        {"versionEndExcluding" : "2.02", "family" : "PLCEasyE4"},
    "cpe:/o:eaton:easy-e4-dc-16te1p_firmware" :
        {"versionEndExcluding" : "2.02", "family" : "PLCEasyE4"},
    "cpe:/o:eaton:easy-e4-dc-4pe1p_firmware" :
        {"versionEndExcluding" : "2.02", "family" : "PLCEasyE4"},
    "cpe:/o:eaton:easy-e4-dc-6ae1p_firmware" :
        {"versionEndExcluding" : "2.02", "family" : "PLCEasyE4"},
    "cpe:/o:eaton:easy-e4-dc-8te1p_firmware" :
        {"versionEndExcluding" : "2.02", "family" : "PLCEasyE4"},
    "cpe:/o:eaton:easy-e4-uc-12rc1p_firmware" :
        {"versionEndExcluding" : "2.02", "family" : "PLCEasyE4"},
    "cpe:/o:eaton:easy-e4-uc-12rcx1p_firmware" :
        {"versionEndExcluding" : "2.02", "family" : "PLCEasyE4"},
    "cpe:/o:eaton:easy-e4-uc-16re1_firmware" :
        {"versionEndExcluding" : "2.02", "family" : "PLCEasyE4"},
    "cpe:/o:eaton:easy-e4-uc-16re1p_firmware" :
        {"versionEndExcluding" : "2.02", "family" : "PLCEasyE4"},
    "cpe:/o:eaton:easy-e4-uc-8re1p_firmware" :
        {"versionEndExcluding" : "2.02", "family" : "PLCEasyE4"}
};

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