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TECSON/GOK: Improper Authentication and Access Control on multiple devices

VDE-2019-012
Last update
05/14/2025 15:00
Published at
06/04/2019 15:21
Vendor(s)
CERT@VDE
External ID
VDE-2019-012
CSAF Document

Summary

A security researcher discovered that the affected application doesn't properly restrict access to an endpoint that is responsible for saving settings, to a user with limited access rights. Based on the lack of adequately implemented access-control rules, by accessing a specific uniform resource locator (URL) on the web server, a malicious user is able to change the application settings without authenticating at all, which violates originally laid ACL rules.

Impact

This issue allows changing the configuration and get full access to the web-based configuration interface of the device wich includes all settings like passwords, alerting parameters and output states. That can adversely affect the planned operation of the equipment or can aid in further attacks on the industrial control process.

Affected Product(s)

Model no. Product name Affected versions
SmartBox 4 LAN Firmware all version
SmartBox 4 LAN PRO Firmware all version
LX-Net Firmware all versions
LX-Q-Net Firmware all versions
e-litro net Firmware all versions

Vulnerabilities

Expand / Collapse all

Published
09/22/2025 14:57
Weakness
Improper Authentication (CWE-287)
Summary

A security researcher discovered that the affected application doesn't properly restrict access to an endpoint that is responsible for saving settings, to a user with limited access rights. Based on the lack of adequately implemented access-control rules, by accessing a specific uniform resource locator (URL) on the web server, a malicious user is able to change the application settings without authenticating at all, which violates originally laid ACL rules.

References

Mitigation

In secure environments disable port forwarding and remote access to the device otherwise disable network access completely.

Revision History

Version Date Summary
1 06/04/2019 15:21 Initial revision.
2 11/06/2024 12:27 Fix: correct certvde domain, added alias, added self-reference
3 04/10/2025 15:00 Fixed version info using vers:/all
4 05/14/2025 15:00 Fix: added distribution