Description
An exploitable heap buffer overflow vulnerability exists in the iocheckd service "I/O-Check" functionality of WAGO PFC200 Firmware versions 03.01.07(13) and 03.00.39(12), and WAGO PFC100 Firmware version 03.00.39(12). A specially crafted set of packets can cause a heap buffer overflow, potentially resulting in code execution. An attacker can send unauthenticated packets to trigger this vulnerability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | WAGO PFC200 | Firmware version 03.01.07(13), Firmware version 03.00.39(12) | — |
| — | WAGO PFC100 | Firmware version 03.00.39(12) | — |
Advisories 2
- ICSA-20-065-01 WAGO I/O-CHECK CISA ICS & IT advisories · Mar 5, 2020
- VDE-2019-022 WAGO: Multiple Vulnerabilities in I/O-Check Service in Multiple Devices CERT@VDE · Dec 16, 2019