Mitsubishi Electric Europe B.V. smartRTU and INEA ME-RTU Use of Hard-Coded Credentials (CVE-2019-14926)

critical Tenable OT Security Plugin ID 500502

Synopsis

The remote OT asset is affected by a vulnerability.

Description

An issue was discovered on Mitsubishi Electric ME-RTU devices through 2.02 and INEA ME-RTU devices through 3.0. Hard- coded SSH keys allow an attacker to gain unauthorised access or disclose encrypted data on the RTU due to the keys not being regenerated on initial installation or with firmware updates. In other words, these devices use private-key values in /etc/ssh/ssh_host_rsa_key, /etc/ssh/ssh_host_ecdsa_key, and /etc/ssh/ssh_host_dsa_key files that are publicly available from the vendor web sites.

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Solution

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

Mitsubishi Electric Europe B.V. recommends users update to firmware Version 3.3 or later.

Plugin Details

Severity: Critical

ID: 500502

Version: 1.9

Type: remote

Family: Tenable.ot

Published: 2/7/2022

Updated: 12/5/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2019-14926

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:mitsubishielectric:smartrtu_firmware

Required KB Items: Tenable.ot/Mitsubishi

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/28/2019

Vulnerability Publication Date: 10/28/2019

Reference Information

CVE: CVE-2019-14926

CWE: 798

ICSA: 21-252-03

Detections

Analytics