CVE-2021-33541
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Phoenix Contact | ILC1x | ILC1x0 all variants | affected |
| Phoenix Contact | ILC1x | ILC1x1 all variants | affected |
Weaknesses
- CWE-770: CWE-770 Allocation of Resources Without Limits or Throttling
ADP Enrichment
CVE Program Container
Additional References
References
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