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Moxa EDR-G902 and EDR-G903 Series Routers Stack-Based Buffer Overflow (CVE-2020-14511)

critical Tenable OT Security Plugin ID 501473

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Malicious operation of the crafted web browser cookie may cause a stack-based buffer overflow in the system web server on the EDR-G902 and EDR-G903 Series Routers (versions prior to 5.4).

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 recommends users implement the following to mitigate the vulnerability:

- Install firmware patch. Patches may be downloaded from Moxa’s security advisory page.

Please see Moxa’s security advisory for more information.

See Also

https://us-cert.cisa.gov/ics/advisories/icsa-20-196-02

Plugin Details

Severity: Critical

ID: 501473

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: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2020-14511

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:edr-g902-t_firmware, cpe:/o:moxa:edr-g902_firmware, cpe:/o:moxa:edr-g903-t_firmware, cpe:/o:moxa:edr-g903_firmware

Required KB Items: Tenable.ot/Moxa

Exploit Ease: No known exploits are available

Patch Publication Date: 7/15/2020

Vulnerability Publication Date: 7/15/2020

Reference Information

CVE: CVE-2020-14511

CWE: 787