Detections
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Korenix JetNet Use of Hard-Coded Cryptographic Key (CVE-2017-14021)

critical Tenable OT Security Plugin ID 503218

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A Use of Hard-coded Cryptographic Key issue was discovered in Korenix JetNet JetNet5018G version 1.4, JetNet5310G version 1.4a, JetNet5428G-2G-2FX version 1.4, JetNet5628G-R version 1.4, JetNet5628G version 1.4, JetNet5728G-24P version 1.4, JetNet5828G version 1.1d, JetNet6710G-HVDC version 1.1e, and JetNet6710G version 1.1. An attacker may gain access to hard-coded certificates and private keys allowing the attacker to perform man-in-the-middle attacks.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.

Korenix has produced new firmware that removes the undocumented hard-coded credentials from supported systems. The new firmware is available for download at:

http://www.korenix.com/upload/doc/FW_JetNet5310G_V2.0.rar

Korenix recommends that affected users use the software support certificate replacement feature to change certificates on affected devices.

Users can find customer support links for Korenix at: http://www.korenix-usa.com/contact-us.php

See Also

https://ics-cert.us-cert.gov/advisories/ICSA-17-299-01

http://www.securityfocus.com/bid/101598

Plugin Details

Severity: Critical

ID: 503218

Version: 1.2

Type: remote

Family: Tenable.ot

Published: 4/25/2025

Updated: 4/25/2025

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Critical

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2017-14021

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vulnerability Information

CPE: cpe:/o:korenix:jetnet6710g_firmware:1.1, cpe:/h:korenix:jetnet5728g-24p_firmware:1.4, cpe:/o:korenix:jetnet6710g-hvdc_firmware:11e, cpe:/o:korenix:jetnet5310g_firmware:1.4a, cpe:/o:korenix:jetnet5428g-2g-2fx_firmware:1.4, cpe:/h:korenix:jetnet5628g-r_firmware:1.4, cpe:/o:korenix:jetnet5628g_firmware:1.4, cpe:/o:korenix:jetnet5018g_firmware:1.4, cpe:/h:korenix:jetnet5828g_firmware:1.1d

Required KB Items: Tenable.ot/Korenix

Exploit Ease: No known exploits are available

Patch Publication Date: 11/1/2017

Vulnerability Publication Date: 11/1/2017

Reference Information

CVE: CVE-2017-14021

CWE: 321

ICSA: 17-299-01