Generex UPS Adapter CS141 Improper Link Resolution Before File Access (CVE-2022-47188)

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

include('compat.inc');

if (description)
{
  script_id(503967);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/13");

  script_cve_id("CVE-2022-47188");

  script_name(english:"Generex UPS Adapter CS141 Improper Link Resolution Before File Access (CVE-2022-47188)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"There is an arbitrary file reading vulnerability in Generex UPS CS141
below 2.06 version. An attacker, making use of the default
credentials, could upload a backup file containing a symlink to
/etc/shadow, allowing him to obtain the content of this path.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
  script_set_attribute(attribute:"see_also", value:"https://www.generex.de/support/changelogs/cs141/2-12");
  script_set_attribute(attribute:"see_also", value:"https://www.generex.de/support/changelogs/cs141/page:2");
  # https://www.incibe-cert.es/en/early-warning/ics-advisories/update-03032023-multiple-vulnerabilities-generex-ups-cs141
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6764f637");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
  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_attribute(attribute:"cvss_score_source", value:"CVE-2022-47188");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_cwe_id(20, 59);

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/03/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/03/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/11/13");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:generex:cs141_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) 2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Generex');

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

var vuln_cpes = {
    "cpe:/o:generex:cs141_firmware" :
        {"versionEndExcluding" : "2.06", "family" : "CS141"}
};

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