FSA-202305 — Festo: Vulnerable WIBU-SYSTEMS CodeMeter Runtime in several products

Summary

A vulnerability in the Wibu CodeMeter Runtime, which is part of the installation packages of several Festo products, was found. An attacker exploiting the vulnerability in WIBU CodeMeter Runtime in server mode could gain full access to the affected server via network access without any user interaction. This could lead to remote code execution and escalation of privileges giving full admin access on the host system for an already authenticated user (logged in locally to the PC).

Details

Impact
An attacker exploiting the vulnerability in WIBU CodeMeter Runtime in server mode could gain full access to the affected server via network access without any user interaction.
Exploiting the vulnerability in WIBU CodeMeter Runtime in non-networked workstation mode could lead to a privilege elevation and full access on this workstation for an already authenticated user (logged in locally to the PC).

Remediation
Festo Automation Suite: Update to version 2.8.0 and use with CODESYS version >= 3.5.19.30.
All other affected products: Update Codemeter to version >= 7.60c.

Vulnerabilities 1

Critical 9.8

CVE-2023-3935

Wibu: Buffer Overflow in CodeMeter Runtime

A heap buffer overflow vulnerability in Wibu CodeMeter Runtime network service up to version 7.60b allows an unauthenticated, remote attacker to achieve RCE and gain full access of the host system.

Wibu codemeter-runtime

Sep 13, 2023

Revision history

2025-05-13 #1.1.1
Adjusted to VDE template and updated information on fixed version of the Festo Automation Suite. Changed document title from 'Vulnerable Wibu CodeMeter Runtime in Several Festo Products' to 'Festo: Vulnerable WIBU-SYSTEMS CodeMeter Runtime in several products'. Updated legal disclaimer to add references to special provisions.
2023-12-05 #1.1.0
Removed 'MES4 (v3)', 'MES4 (<=v2)' and 'Energy-PC' from affected products as they do not install WIBU CodeMeter Runtime.
2023-11-28 #1.0.0
Initial version

References

For further security-related issues in Festo products please contact the Festo Product Security Incident Response Team (PSIRT)
https://festo.com/psirt
CERT@VDE Security Advisories
https://certvde.com/en/advisories/vendor/festo/
FSA-202305: Festo: Vulnerable WIBU-SYSTEMS CodeMeter Runtime in several products - HTML
https://certvde.com/en/advisories/VDE-2023-036