Moxa NPort IAW5000A-I/O Series Serial Device Server Improper Input Validation (CVE-2021-32970)

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

include('compat.inc');

if (description)
{
  script_id(501496);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/04");

  script_cve_id("CVE-2021-32970");

  script_name(english:"Moxa NPort IAW5000A-I/O Series Serial Device Server Improper Input Validation (CVE-2021-32970)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"Data can be copied without validation in the built-in web server in
Moxa NPort IAW5000A-I/O series firmware version 2.2 or earlier, which
may allow a remote attacker to cause denial-of-service conditions.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
  # https://www.moxa.com/en/support/product-support/security-advisory/nport-iaw5000a-io-serial-device-server-vulnerabilities
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3b7b249d");
  script_set_attribute(attribute:"see_also", value:"https://www.cisa.gov/uscert/ics/advisories/icsa-21-187-01");
  script_set_attribute(attribute:"solution", value:
"The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original
can be found at CISA.gov.

Moxa has developed solutions to address these vulnerabilities. Please contact Moxa Technical Support for a security
patch.

Moxa has also published a security advisory to provide more information.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  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-2021-32970");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2022/04/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/04/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/08/02");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:moxa:nport_iaw5150a-12i%2fo_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:moxa:nport_iaw5150a-6i%2fo_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:moxa:nport_iaw5250a-12i%2fo_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:moxa:nport_iaw5250a-6i%2fo_firmware");
  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) 2023-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Moxa');

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

var vuln_cpes = {
    "cpe:/o:moxa:nport_iaw5150a-6i%2fo_firmware" :
        {"versionEndIncluding" : "2.2", "family" : "NPort"},
    "cpe:/o:moxa:nport_iaw5150a-12i%2fo_firmware" :
        {"versionEndIncluding" : "2.2", "family" : "NPort"},
    "cpe:/o:moxa:nport_iaw5250a-6i%2fo_firmware" :
        {"versionEndIncluding" : "2.2", "family" : "NPort"},
    "cpe:/o:moxa:nport_iaw5250a-12i%2fo_firmware" :
        {"versionEndIncluding" : "2.2", "family" : "NPort"}
};

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