Moxa NPort IAW5000A-I/O Series Serial Device Server Stack-Based Buffer Overflow (CVE-2021-32976)

critical Tenable OT Security Plugin ID 501468

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Five 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 initiate a denial-of-service attack and execute arbitrary code.

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: Critical

ID: 501468

Version: 1.5

Type: remote

Family: Tenable.ot

Published: 8/2/2023

Updated: 9/4/2024

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-2021-32976

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: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-2021-32976

CWE: 787

ICSA: 21-187-01

Detections

Analytics