CVE-2021-33541

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Summary

CVECVE-2021-33541
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-06-25 19:15:00 UTC
Updated2021-07-02 00:11:00 UTC
DescriptionPhoenix 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.

Risk And Classification

Problem Types: CWE-770

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Phoenixcontact Ilc1x0 - All All All
Operating System Phoenixcontact Ilc1x0 Firmware All All All All
Hardware Phoenixcontact Ilc1x1 - All All All
Operating System Phoenixcontact Ilc1x1 Firmware All All All All

References

ReferenceSourceLinkTags
PHOENIX CONTACT : Security Advisory for ILC1x1 Industrial controllers — English (USA) CONFIRM cert.vde.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

LEGACY: 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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