Beckhoff ADS Router Use of a Broken or Risky Cryptographic Algorithm (CVE-2017-16718)

medium Tenable OT Security Plugin ID 500338

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Beckhoff TwinCAT 3 supports communication over ADS. ADS is a protocol for industrial automation in protected environments. This protocol uses user configured routes, that can be edited remotely via ADS. This special command supports encrypted authentication with username/password. The encryption uses a fixed key, that could be extracted by an attacker. Precondition of the exploitation of this weakness is network access at the moment a route is added. 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: Medium

ID: 500338

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: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2017-16718

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

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

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

Vulnerability Information

CPE: cpe:/a:beckhoff:twincat:3.0

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-2017-16718

CWE: 327

Detections

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