CVE-2022-2302

A vendor fix is available.

• Fixedlenze_psirt

  Install version V01.08.01.3021, which solves the identified security vulnerability.

• Mitigationlenze_psirt

  As part of a security strategy, Lenze SE recommends the following general defense measures to reduce the risk of exploits: • Only use the products in a protected and controlled environment to minimize network impact and to ensure that they are inaccessible from outside. • Use external firewalls to protect the automation system network and to separate it from other networks. Remark: One Measure should be to block port 4840 via the external firewall and open this port for authenticated access only. • Use Virtual Private Networks (VPN) tunnels when remote access is required. • Use IDS (Intrusion Detection Systems) where possible to detect anomalies in the network. • Activate and use user administration and password functions. • Use encrypted communication links. • Restrict access to both the development tools and their projects and the products of the automation system by physical means, operating system functions, etc. • Protect the development tool by using the latest virus detection solutions. • Use of certificate-based communication via the message security modes Sign or Sign&Encrypt and trust of the corresponding client certificates on the machine controller by the OPC-UA server. This can reduce the risk of exploiting this vulnerability.