Beckhoff ADS protocol Authentication Bypass by Spoofing (CVE-2019-16871)

critical Tenable OT Security Plugin ID 500357

Synopsis

The remote OT asset is affected by a vulnerability.

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.

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: Critical

ID: 500357

Version: 1.4

Type: remote

Family: Tenable.ot

Published: 2/7/2022

Updated: 9/12/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 7.3

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

CVSS Score Source: CVE-2019-16871

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

Vulnerability Information

CPE: cpe:/a:beckhoff:twincat

Required KB Items: Tenable.ot/Beckhoff

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/19/2019

Vulnerability Publication Date: 12/19/2019

Reference Information

CVE: CVE-2019-16871

CWE: 290

Detections

Analytics