CVE-2021-33541 (GCVE-0-2021-33541)

Vulnerability from cvelistv5 – Published: 2021-06-25 18:26 – Updated: 2024-09-16 23:21
VLAI
Title
Phoenix Contact: ILC1x Industrial controllers affected by Denial-of-Service vulnerability
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
CERTVDE CNA
References
Impacted products
Vendor Product Version
Phoenix Contact ILC1x Affected: ILC1x0 all variants
Affected: ILC1x1 all variants
Create a notification for this product.
Date Public
2021-06-23 00:00
Credits
This vulnerability was discovered by the Industrial Control Security Laboratory of Qi An Xin Technology Group Inc. from China and reported to CERT@VDE. PHOENIX CONTACT thanks CERT@VDE for the coordination and support with this publication.
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