WAGO: Web-Based Management Denial of Service
The Web-Based Management (WBM) of WAGOs programmable logic controller (PLC) is typically used for commissioning and update. The controller is an embedded device which has limited resources. The vulnerability described here takes advantage of this fact.With special crafted requests it is possible to have a denial of service of the WBM.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2019-5149US | high7.5 | — | ||
The WBM web application on firmwares prior to 03.02.02 and 03.01.07 on the WAGO PFC100 and PFC2000, respectively, runs on a lighttpd web server and makes use of the FastCGI module,… | ||||
references
External citations — patches, advisories, analysis.
remediations (1)
- Mitigation
- Follow the instructions in WAGOs handbook Cyber Security for Controller - Restrict network access to the device. - Do not directly connect the device to the internet Due to the limited resources on the embedded device, it is necessary to protect it from unauthorized access such as denial of service attacks.
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