Beckhoff ADS Protocol Inadequate Encryption Strength (CVE-2017-16726)

critical Tenable OT Security Plugin ID 500339

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Beckhoff TwinCAT supports communication over ADS. ADS is a protocol for industrial automation in protected environments.
ADS has not been designed to achieve security purposes and therefore does not include any encryption algorithms because of their negative effect on performance and throughput. An attacker can forge arbitrary ADS packets when legitimate ADS traffic is observable.

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: 500339

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: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2017-16726

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:H/A:N

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

Vulnerability Information

CPE: cpe:/a:beckhoff:twincat

Required KB Items: Tenable.ot/Beckhoff

Exploit Ease: No known exploits are available

Patch Publication Date: 6/27/2018

Vulnerability Publication Date: 6/27/2018

Reference Information

CVE: CVE-2017-16726

CWE: 326

Detections

Analytics