August 29, 2024 at 08:06AM
Nozomi Networks discovered vulnerabilities in Beckhoff Automation’s TwinCAT/BSD operating system. The Device Manager component has four vulnerabilities, including ‘high severity’ flaws that can be exploited for authentication bypass and cross-site scripting attacks, potentially compromising the PLC administrator’s password. There are also ‘medium severity’ vulnerabilities allowing for PLC denial of service attacks. Beckhoff has released patches and mitigations.
Key takeaways from the meeting notes:
– Nozomi Networks has disclosed vulnerabilities in the TwinCAT/BSD operating system for industrial PCs, particularly in the Device Manager web-based management component.
– These vulnerabilities include high severity flaws such as authentication bypass and cross-site scripting attacks (CVE-2024-41173 and CVE-2024-41174) that can lead to unauthorized access and PLC logic tampering.
– Medium severity flaws can also cause PLC denial of service attacks, rendering devices unresponsive until a power reset is performed.
– Beckhoff has responded by releasing patches and mitigations, as well as publishing advisories for each vulnerability.
The meeting notes also highlight the broader context of industrial control systems (ICS) vulnerabilities and the importance of timely patching and mitigation efforts to safeguard these critical systems.
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