WAGO CC100 — vulnerability CVE-2022-47380

An authenticated remote attacker may use a stack based  out-of-bounds write vulnerability in multiple CODESYS products in multiple versions to write data into the stack which can lead to a denial-of-service condition, memory overwriting, or remote code execution.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vulnerabilities of CODESYS Advisory 2023-02:• Please make sure that the 'port authentication' option in the web-based management is activated. In this way none of the vulnerabilities can be exploited by unauthenticated users.• Please change the default admin password. Vulnerability of CODESYS Advisory 2023-03:• This vulnerability exists in the CODESYS programming service which is needed for commission only. Deactivate the CODESYS programming port in the web-based management if you do not need the service. In addition to the mitigation hints CODESYS GmbH recommends the following general defense measures to reduce the risk of exploits: Use controllers and devices only in a protected environment to minimize network exposure and ensure they are not accessible from outside. Use firewalls to protect and separate the control system network from other networks. Use VPN (Virtual Private Networks) tunnels if remote access is required. Activate and apply user management and password features. Use encrypted communication links. Limit the access to both development and control system by physical means, operating system features, etc. Protect both development and control system by using up to date virus detection solutions. For further impact information and risk mitigation, please refer to the official CODESYS Advisory Website at https://www.codesys.com/security/security-reports.html