Description
TwinCAT OPC UA Server in TF6100 and TS6100 in product versions before 4.3.48.0 or with TcOpcUaServer versions below 3.2.0.194 are prone to a relative path traversal that allow administrators to create or delete any files on the system.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High
Affected products
- Beckhoff Automation / TwinCAT OPC UA ServerTF6100 – 4.3.48.0
- Beckhoff Automation / TwinCAT OPC UA ServerTS6100 – 4.3.48.0
- Beckhoff Automation / TwinCAT OPC UA ServerTcOpcUaServer version – 3.2.0.19423
References
- VENDOR_ADVISORYhttps://cert.vde.com/en/advisories/VDE-2021-051/