Moxa IKS, EDS Missing Encryption of Sensitive Data (CVE-2019-6526)

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

include('compat.inc');

if (description)
{
  script_id(501469);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/04");

  script_cve_id("CVE-2019-6526");

  script_name(english:"Moxa IKS, EDS Missing Encryption of Sensitive Data (CVE-2019-6526)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"Moxa IKS-G6824A series Versions 4.5 and prior, EDS-405A series Version
3.8 and prior, EDS-408A series Version 3.8 and prior, and EDS-510A
series Version 3.8 and prior use plaintext transmission of sensitive
data, which may allow an attacker to capture sensitive data such as an
administrative password.

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://ics-cert.us-cert.gov/advisories/ICSA-19-057-01");
  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 recommends users implement the following measures to mitigate these vulnerabilities.

- Install firmware patch. Patches may be requested from Moxa Customer Service (login required):
- Set EDS series Web configuration as "https only” to reduce predictable session ID concern.

Please see Moxa’s security advisory for more information.');
  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:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-6526");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(319);

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/04/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/04/15");
  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:eds-405a_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:moxa:eds-408a_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:moxa:eds-510a_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:moxa:iks-g6824a_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/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:iks-g6824a_firmware" :
        {"versionEndIncluding" : "5.6", "family" : "IKS"},
    "cpe:/o:moxa:eds-405a_firmware" :
        {"versionEndIncluding" : "3.8", "family" : "MoxaEDS"},
    "cpe:/o:moxa:eds-408a_firmware" :
        {"versionEndIncluding" : "3.8", "family" : "MoxaEDS"},
    "cpe:/o:moxa:eds-510a_firmware" :
        {"versionEndIncluding" : "3.8", "family" : "MoxaEDS"}
};

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