CVE-2020-12526

BECKHOFF: DoS-Vulnerability for TwinCAT OPC UA Server and IPC Diagnostics UA Server

CVSS 5.3 MEDIUMEPSS 1.0%CWE-20

TwinCAT OPC UA Server in versions up to 2.3.0.12 and IPC Diagnostics UA Server in versions up to 3.1.0.1 from Beckhoff Automation GmbH & Co. KG are vulnerable to denial of service attacks. The attacker needs to send several specifically crafted requests to the running OPC UA server. After some of these requests the OPC UA server is no longer responsive to any client. This is without effect to the real-time functionality of IPCs.

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

Produtos afetados

Beckhoff · IPC Diagnostics UA Server Beckhoff · TF6100 Beckhoff · TwinCAT OPC UA Server

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Referências

https://cert.vde.com/en-us/advisories/vde-2020-051 https://download.beckhoff.com/download/Document/product-security/Advisories/advisory-2021-001.pdf