Description
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.
Published: 2021-06-25
Score: 7.5 High
EPSS: 1.3% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

Vendor Solution

Temporary Fix / Mitigation Phoenix Contact recommends operating network-capable devices in closed networks or protected with a suitable firewall. For detailed information on our recommendations for measures to protect network-capable devices, please refer to the Phoenix Contact application note: Measures to protect network-capable devices with Ethernet connection (https://dam-mdc.phoenixcontact.com/asset/156443151564/0a870ae433c19148b80bd760f3a1c1f2/107913_en_03.pdf)

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
EUVD EUVD EUVD-2021-20233 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.

Subscriptions

Phoenixcontact Ilc1x0 Ilc1x0 Firmware Ilc1x1 Ilc1x1 Firmware
cve-icon MITRE

Status: PUBLISHED

Assigner: CERTVDE

Published:

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

Reserved: 2021-05-24T00:00:00.000Z

Link: CVE-2021-33541

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

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

Modified: 2024-11-21T06:09:02.890

Link: CVE-2021-33541

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses