Moxa AWK-3131A Series Industrial AP/Bridge/Client Improper Neutralization of Special Elements Used in an OS Command (CVE-2019-5138)

critical Tenable OT Security Plugin ID 501556

Synopsis

The remote OT asset is affected by a vulnerability.

Description

An exploitable command injection vulnerability exists in encrypted diagnostic script functionality of the Moxa AWK-3131A firmware version 1.13. A specially crafted diagnostic script file can cause arbitrary busybox commands to be executed, resulting in remote control over the device. An attacker can send diagnostic while authenticated as a low privilege user to trigger this vulnerability.

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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 created a security patch to mitigate these vulnerabilities. Please contact Moxa technical support to obtain it.
For additional information see the Moxa advisory.

Plugin Details

Severity: Critical

ID: 501556

Version: 1.6

Type: remote

Family: Tenable.ot

Published: 8/2/2023

Updated: 9/4/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 7

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

CVSS Score Source: CVE-2019-5138

CVSS v3

Risk Factor: Critical

Base Score: 9.9

Temporal Score: 8.9

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

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

Vulnerability Information

CPE: cpe:/o:moxa:awk-3131a_firmware:1.13

Required KB Items: Tenable.ot/Moxa

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/25/2020

Vulnerability Publication Date: 2/25/2020

Reference Information

CVE: CVE-2019-5138

CWE: 78

ICSA: 20-063-04

Detections

Analytics