Multiple vulnerabilities were reported in CODESYS 2.3 Runtime. The CODESYS 2.3 Runtime is an essential component in several WAGO PLCs. All vulnerable PLCs are listed in chapter ‘Affected Products’.
https://www.codesys.com/security/security-reports.html



A Denial-of-Service Vulnerability was reported in CODESYS 2.3 Runtime. The CODESYS 2.3 Runtime is an essential component in several WAGO PLC’s. All vulnerable PLCs are listed in chapter ‘Affected Products’.
https://www.codesys.com/security/security-reports.html



Multiple vulnerabilities were reported in the Nucleus Real-Time Operating System (RTOS). The Nucleus RTOS is an essential component in several WAGO PLCs and fieldbus coupler. WAGO uses older Versions of the Nucleus RTOS also in legacy products.

For additional information please consult the official Siemens advisory:

• Advisory SSA-044112



Cross-site scripting in web-based management and memory leak in the remote logging function of FL MGUARD 1102 and FL MGUARD 1105.

CVE-2021-34582:
The file upload functionality in the web-based management is affected by a stored cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation). An authenticated FL MGUARD user with Admin or Super Admin role can upload a certificate file on the Basic settings > LDAP page, on the Logs > Remote logging page, or through the REST API. The content of this file is embedded into the corresponding web page, and any
HTML code within the file is rendered when the page is viewed by the same or a different authenticated user.

CVE-2021-34598:
The remote logging functionality is impaired by the lack of memory release for data structures from syslog-ng when remote logging is active (CWE-770: Allocation of Resources Without Limits or Throttling).



Through specific nodes of the server configuration interface of the TwinCAT OPC UA Server administrators are able to remotely create and delete any files on the system which the server is running on, though this access should have been restricted to specific directories. In case that configuration interface is combined with not recommended settings to allow anonymous access via the TwinCAT OPC UA Server then this kind of file access is even possible for any unauthenticated user from remote.



PC Worx / -Express is vulnerable to a “zip slip” style vulnerability when loading a project file.



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