Nexans FTTO GigaSwitch Backdoor Account (CVE-2022-32985)

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

include('compat.inc');

if (description)
{
  script_id(502380);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/21");

  script_cve_id("CVE-2022-32985");

  script_name(english:"Nexans FTTO GigaSwitch Backdoor Account (CVE-2022-32985)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"libnx_apl.so on Nexans FTTO GigaSwitch before 6.02N and 7.x before
7.02 implements a Backdoor Account for SSH logins on port 50200 or
50201.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
  # https://sec-consult.com/vulnerability-lab/advisory/hardcoded-backdoor-user-outdated-software-components-nexans-ftto-gigaswitch/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?bfac2af5");
# https://www.nexans.de/de/products/Data-Network-Solutions/Industrial-and-office-switches.html
# script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?38c4fe2b");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-32985");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(798);

  script_set_attribute(attribute:"vuln_publication_date", value:"2022/07/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/07/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/09/09");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:nexans:gigaswitch_641_desk_v5_sfp-vi_firmware:6");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:nexans:gigaswitch_641_desk_v5_sfp-vi_firmware:7");
  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) 2024-2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Nexans');

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

var vuln_cpes = {
    "cpe:/o:nexans:gigaswitch_641_desk_v5_sfp-vi_firmware:6" :
        {"versionEndExcluding" : "6.02n", "family" : "iGigaSwitch"},
    "cpe:/o:nexans:gigaswitch_641_desk_v5_sfp-vi_firmware:7" :
        {"versionEndExcluding" : "7.02", "versionStartIncluding" : "7.0", "family" : "iGigaSwitch"}
};

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