Phoenix Contact Classic Line Controllers ILC1x0 and ILC1x1 in all versions/variants are affected by a Denial-of-Service vulnerability. The communication protocols and device access do not feature authentication measures. Remote attackers can use specially crafted IP packets to cause a denial of service on the PLC's network communication module. A successful attack stops all network communication. To restore the network connectivity the device needs to be restarted. The automation task is not affected.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: CERTVDE

Published: 2021-06-25T18:26:05.564115Z

Updated: 2024-09-16T23:21:50.885Z

Reserved: 2021-05-24T00:00:00

Link: CVE-2021-33541

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2021-06-25T19:15:09.757

Modified: 2021-07-02T00:11:39.970

Link: CVE-2021-33541

cve-icon Redhat

No data.