Beckhoff TwinCAT Denial of Service (CVE-2019-5637)

high Tenable OT Security Plugin ID 500344

Synopsis

The remote OT asset is affected by a vulnerability.

Description

When Beckhoff TwinCAT is configured to use the Profinet driver, a denial of service of the controller could be reached by sending a malformed UDP packet to the device. This issue affects TwinCAT 2 version 2304 (and prior) and TwinCAT 3.1 version 4204.0 (and prior).

This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

Refer to the vendor advisory.

Plugin Details

Severity: High

ID: 500344

Version: 1.5

Type: remote

Family: Tenable.ot

Published: 2/7/2022

Updated: 9/11/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2019-5637

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:beckhoff:twincat:3, cpe:/o:beckhoff:twincat:2

Required KB Items: Tenable.ot/Beckhoff

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/21/2019

Vulnerability Publication Date: 11/21/2019

Reference Information

CVE: CVE-2019-5637

CWE: 369

Detections

Analytics