Beckhoff Twincat Divide By Zero

high Tenable.ot Plugin ID 500344
New! Plugin Severity Now Using CVSS v3

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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).

Solution

Refer to vendor advisory for Security Updates

See Also

https://blog.rapid7.com/2019/10/08/r7-2019-32-denial-of-service-vulnerabilities-in-beckhoff-twincat-plc-environment-fixed/

https://download.beckhoff.com/download/Document/product-security/Advisories/advisory-2019-007.pdf

Plugin Details

Severity: High

ID: 500344

Version: 1.0

Type: local

Family: SCADA

Published: 5/27/2020

Updated: 5/27/2020

Risk Information

CVSS Score Source: CVE-2019-5637

CVSS v2

Risk Factor: Medium

Base Score: 5

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

CVSS v3

Risk Factor: High

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vulnerability Information

CPE: cpe:2.3:o:beckhoff:twincat:3.1.4022.30:*:*:*:*:*:*:*, cpe:2.3:h:beckhoff:twincat_cx2030:-:*:*:*:*:*:*:*, cpe:2.3:h:beckhoff:twincat_cx5140:-:*:*:*:*:*:*:*, cpe:2.3:o:beckhoff:twincat:3.1.4022.29:*:*:*:*:*:*:*, cpe:2.3:h:beckhoff:twincat_cx5140:-:*:*:*:*:*:*:*

Patch Publication Date: 11/21/2019

Vulnerability Publication Date: 11/21/2019

Reference Information

CVE: CVE-2019-5637