Moxa MGate Protocol Gateways Cleartext Transmission of Sensitive Information (CVE-2021-4161)

high Tenable OT Security Plugin ID 501478

Synopsis

The remote OT asset is affected by a vulnerability.

Description

The affected products contain vulnerable firmware, which could allow an attacker to sniff the traffic and decrypt login credential details.
This could give an attacker admin rights through the HTTP web server.

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.

Moxa has developed the following mitigations to address this vulnerability.

- Enable ‘HTTPS’ and disable the HTTP console function under ‘Console Settings’

Moxa also recommends users refer to Tech Note: Moxa Security Hardening Guide for MGate MB3000 Series

Plugin Details

Severity: High

ID: 501478

Version: 1.4

Type: remote

Family: Tenable.ot

Published: 8/2/2023

Updated: 3/4/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2021-4161

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/o:moxa:mgate_mb3180_firmware, cpe:/o:moxa:mgate_mb3280_firmware, cpe:/o:moxa:mgate_mb3480_firmware

Required KB Items: Tenable.ot/Moxa

Exploit Ease: No known exploits are available

Patch Publication Date: 12/27/2021

Vulnerability Publication Date: 12/27/2021

Reference Information

CVE: CVE-2021-4161

CWE: 319

Detections

Analytics