Moxa EDS-G516E and EDS-510E Series Ethernet Switches Weak Password Requirements (CVE-2020-6991)

critical Tenable OT Security Plugin ID 501560

Synopsis

The remote OT asset is affected by a vulnerability.

Description

In Moxa EDS-G516E Series firmware, Version 5.2 or lower, weak password requirements may allow an attacker to gain access using brute force.

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 solutions to address the vulnerabilities:

- EDS-G516E Series: Download the new firmware.
- EDS-510E Series: please contact Moxa Technical Support for assistance.
- Enable password on configuration file from “Configuration File Encryption” setting to eliminate the potential risk.
- Enable HTTPS from the “Management Interface” setting.
- Enable “Account Login Failure Lockout” functions to eliminate the potential risk.

Please see Moxa’s security advisory for more information.

Plugin Details

Severity: Critical

ID: 501560

Version: 1.8

Type: remote

Family: Tenable.ot

Published: 8/2/2023

Updated: 11/26/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

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-2020-6991

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:moxa:eds-510e_firmware, cpe:/o:moxa:eds-g516e_firmware

Required KB Items: Tenable.ot/Moxa

Exploit Ease: No known exploits are available

Patch Publication Date: 3/24/2020

Vulnerability Publication Date: 3/24/2020

Reference Information

CVE: CVE-2020-6991

CWE: 521

ICSA: 20-056-04

Detections

Analytics