SB2018062718 - Use of a broken or risky cryptographic algorithm in Beckhoff TwinCAT

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2018062718

SB2018062718 - Use of a broken or risky cryptographic algorithm in Beckhoff TwinCAT

Published: June 27, 2018 Updated: August 8, 2020

Security Bulletin ID SB2018062718
Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Use of a broken or risky cryptographic algorithm (CVE-ID: CVE-2017-16718)

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

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.


Remediation

Install update from vendor's website.

References