Summary
Several vulnerabilities have been identified in the web-based management of WAGO devices utilized in
Endress+Hauser IoT solutions. WAGO has provided fixes for these vulnerabilities, which have been
integrated into the solutions by Endress+Hauser. Additionally, a guideline on secure operation of these
solutions has been made available.
Impact
With Cross-Site-Scripting it would be possible to attack a user's Web Browser, thereby potentially leaking
data, including personal and device data, to other 3rd parties. In case of leaked backup data, then credentials
used to authenticate with the remote services are also compromised.\
If the attacker has physical access to the component, then
* The devices connected to the components may no longer be available in Netilion.
* The data received by Netilion from the connected devices could be manipulated data.
* The components could be a vector in other cyber-attacks.
* Data from the components and connected devices could be leaked to 3rd parties.
Affected Product(s)
| Model no. | Product name | Affected versions |
|---|---|---|
| Endress+Hauser Compact Controller CC 100 (751-9301) | Endress+Hauser FW20, Endress+Hauser FW23 | |
| Endress+Hauser PFC 200 (750-82xx/xxx-xxx) | Endress+Hauser FW22, Endress+Hauser FW17 |
Vulnerabilities
Expand / Collapse allThe configuration backend allows an unauthenticated user to write arbitrary data with root privileges to the storage, which could lead to unauthenticated remote code execution and full system compromise.
The configuration backend of the web-based management can be used by unauthenticated users, although only authenticated users should be able to use the API. The vulnerability allows an unauthenticated attacker to read and set several device parameters that can lead to full compromise of the device.
In multiple products of WAGO a vulnerability allows an unauthenticated, remote attacker to create new users and change the device configuration which can result in unintended behaviour, Denial of Service and full system compromise.
The configuration backend of the web-based management is vulnerable to reflected XSS (Cross-Site Scripting) attacks that targets the users browser. This leads to a limited impact of confidentiality and integrity but no impact of availability.
A CORS Misconfiguration in the web-based management allows a malicious third party webserver to misuse all basic information pages on the webserver. In combination with CVE-2022-45138 this could lead to disclosure of device information like CPU diagnostics. As there is just a limited amount of information readable the impact only affects a small subset of confidentiality.
Mitigation
If an immediate firmware update is not possible, the only way to prevent an attack is to prevent the access of
the Web Based Management tool from the internet. This can be achieved by using a network element, such
as a router, which hides and secures the components from the internet.
Remediation
Endress+Hauser provides updated firmware versions for the related components from WAGO which fixes the
vulnerability. Endress+Hauser strongly recommends customers to update to the new fixed version. For
support, please contact your local service center.
Revision History
| Version | Date | Summary |
|---|---|---|
| 1 | 21.10.2024 10:00 | Initial revision. |
| 2 | 06.11.2024 12:27 | Fix: correct certvde domain, added self-reference |
| 3 | 22.05.2025 15:03 | Fix: version space, quotation mark |