Beckhoff Twincat Improper Input Validation

critical Tenable.ot Plugin ID 500357
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Description

Beckhoff Embedded Windows PLCs through 3.1.4024.0, and Beckhoff Twincat on Windows Engineering stations, allow an attacker to achieve Remote Code Execution (as SYSTEM) via the Beckhoff ADS protocol.

Solution

Refer to vendor advisory for Security Updates

See Also

https://download.beckhoff.com/download/document/product-security/Advisories/advisory-2017-001.pdf

https://www.ic4.be/2019/12/18/beckhoff-cve-2019-16871/#more-648

Plugin Details

Severity: Critical

ID: 500357

Version: 1.0

Type: local

Family: SCADA

Published: 5/27/2020

Updated: 5/27/2020

Risk Information

CVSS Score Source: CVE-2019-16871

CVSS v2

Risk Factor: High

Base Score: 9.3

Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

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

Vulnerability Information

CPE: cpe:2.3:a:beckhoff:twincat:2.0:*:*:*:*:*:*:*, cpe:2.3:a:beckhoff:twincat:*:*:*:*:*:*:*:*, cpe:2.3:a:beckhoff:twincat:3.1:build_4022:*:*:*:*:*:*, cpe:2.3:a:beckhoff:twincat:3.1:build_4024.0:*:*:*:*:*:*

Patch Publication Date: 12/19/2019

Vulnerability Publication Date: 12/19/2019

Reference Information

CVE: CVE-2019-16871