Summary
Phoenix Contact Classic Line industrial controllers are developed and designed for the use in closed industrial networks. 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 (CWE-770).
Details
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
Impact
A successful attack stops all network communication. To restore the network connectivity the device needs to be restarted. The automation task is not affected.
Vulnerabilities 1
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High 7.5
Phoenix Contact: ILC1x Industrial controllers affected by Denial-of-Service vulnerability
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 cra…
Revision history
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#4
Fix: added distribution
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#3
Update: Provider data has been corrected
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#2
update: all versions was converted to a machine-readable format
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#1
Initial revision.
References
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PHOENIX CONTACT advisory overview at CERT@VDE
https://certvde.com/en/advisories/vendor/phoenixcontact/
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VDE-2021-019: PHOENIX CONTACT: Security Advisory for ILC1x1 Industrial controllers - HTML
https://certvde.com/en/advisories/VDE-2021-019