CVE-2017-16718: beckhoff twincat Insufficiently Protected Credentials

Vulnerability summary

CVE-2017-16718 is a medium (CVSS 5.9) Insufficiently Protected Credentials vulnerability in beckhoff twincat. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 35.5% of scored vulnerabilities.

Timeline

1. 27-06-2018
   PublishedVulnerability first disclosed.
2. 16-09-2024
   Last modifiedVulnerability information updated.

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.

• CWE-522Insufficiently Protected CredentialsThe product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.
• CWE-327Use of a Broken or Risky Cryptographic AlgorithmThe product uses a broken or risky cryptographic algorithm or protocol.