Tridium Niagara Observable Discrepancy (CVE-2025-3939)

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

include('compat.inc');

if (description)
{
  script_id(505519);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/26");

  script_cve_id("CVE-2025-3939");

  script_name(english:"Tridium Niagara Observable Discrepancy (CVE-2025-3939)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"Observable Response Discrepancy vulnerability in Tridium Niagara
Framework on Windows, Linux, QNX, Tridium Niagara Enterprise
Security on Windows, Linux, QNX allows Cryptanalysis. This issue
affects Niagara Framework: before 4.14.2, before 4.15.1, before
4.10.11; Niagara Enterprise Security: before 4.14.2, before 4.15.1,
before 4.10.11.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
  # https://www.honeywell.com/content/dam/honeywellbt/en/documents/downloads/product-security/security-notification/hon-corp-niagara-software-vulnerabilities-2025-05-22-01.pdf
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?aa3ced70");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Niagara Framework and Niagara Enterprise Security version
4.14u2 or later. Updates for 4.10 and 4.15 will be released shortly.
Contact Tridium support at [email protected] for assistance.");
  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:L/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-3939");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(203);

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/05/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/05/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/25");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:tridium:niagara:4.10u10");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:tridium:niagara:4.14u1");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:tridium:niagara:4.15");
  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) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/assetBag');

var asset = tenable_ot::assets::get(hasAssetBag:TRUE);

var vuln_cpes = {
    "cpe:/a:tridium:niagara:4.10u10" :
        {"versionStartIncluding" : "4.10u10", "versionEndIncluding" : "4.10u10", "family" : "Niagara"},
    "cpe:/a:tridium:niagara:4.14u1" :
        {"versionStartIncluding" : "4.14u1", "versionEndIncluding" : "4.14u1", "family" : "Niagara"},
    "cpe:/a:tridium:niagara:4.15" :
        {"versionStartIncluding" : "4.15", "versionEndIncluding" : "4.15", "family" : "Niagara"}
};

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