Moxa NPort IAW5000A-I/O Series Serial Device Server Buffer Copy Without Checking Size of Input (CVE-2021-32968)

high Tenable OT Security Plugin ID 501586

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Two buffer overflows in the built-in web server in Moxa NPort IAW5000A-I/O Series firmware version 2.2 or earlier may allow a remote attacker to cause a denial-of-service condition.

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 solutions to address these vulnerabilities. Please contact Moxa Technical Support for a security patch.

Moxa has also published a security advisory to provide more information.

Plugin Details

Severity: High

ID: 501586

Version: 1.7

Type: remote

Family: Tenable.ot

Published: 8/2/2023

Updated: 9/4/2024

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:N/I:N/A:P

CVSS Score Source: CVE-2021-32968

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:N/I:N/A:H

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

Vulnerability Information

CPE: cpe:/o:moxa:nport_iaw5250a-6i%2fo_firmware, cpe:/o:moxa:nport_iaw5150a-6i%2fo_firmware, cpe:/o:moxa:nport_iaw5150a-12i%2fo_firmware, cpe:/o:moxa:nport_iaw5250a-12i%2fo_firmware

Required KB Items: Tenable.ot/Moxa

Exploit Ease: No known exploits are available

Patch Publication Date: 4/1/2022

Vulnerability Publication Date: 4/1/2022

Reference Information

CVE: CVE-2021-32968

CWE: 120

ICSA: 21-187-01

Detections

Analytics