Detections
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Moxa IKS, EDS Out-of-Bounds Read (CVE-2019-6522)

critical Tenable OT Security Plugin ID 501507

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Moxa IKS and EDS fails to properly check array bounds which may allow an attacker to read device memory on arbitrary addresses, and may allow an attacker to retrieve sensitive data or cause device reboot.

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 measures to mitigate these vulnerabilities.

- Install firmware patch. Patches may be requested from Moxa Customer Service (login required):
- Set EDS series Web configuration as "https only” to reduce predictable session ID concern.

Please see Moxa’s security advisory for more information.

See Also

https://ics-cert.us-cert.gov/advisories/ICSA-19-057-01

Plugin Details

Severity: Critical

ID: 501507

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: 5.2

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.3

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

CVSS Score Source: CVE-2019-6522

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

Vulnerability Information

CPE: cpe:/o:moxa:eds-408a_firmware, cpe:/o:moxa:iks-g6824a_firmware, cpe:/o:moxa:eds-405a_firmware, cpe:/o:moxa:eds-510a_firmware

Required KB Items: Tenable.ot/Moxa

Exploit Ease: No known exploits are available

Patch Publication Date: 3/5/2019

Vulnerability Publication Date: 3/5/2019

Reference Information

CVE: CVE-2019-6522

CWE: 125

ICSA: 19-057-01