A vulnerability classified as problematic was found in WAGO PFC100 and PFC200 (version unknown). Affected by this vulnerability is an unknown function of the component iocheckd Service. The manipulation with an unknown input leads to a missing authentication vulnerability. The CWE definition for the vulnerability is CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. As an impact it is known to affect availability. The summary by CVE is:

An exploitable denial of service 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 denial of service, resulting in the device entering an error state where it ceases all network communications. An attacker can send unauthenticated packets to trigger this vulnerability.

The weakness was released 12/18/2019. This vulnerability is known as CVE-2019-5078 since 01/04/2019. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Entries connected to this vulnerability are available at VDB-147514, VDB-147513, VDB-147512 and VDB-147510.

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Vendor

• WAGO

Name

• PFC100
• PFC200

License

• commercial

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CPE 2.2info

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