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ID

VDE-2020-049

Published

2020-12-17 10:00 (CET)

Last update

2020-12-17 10:00 (CET)

Vendor(s)

PHOENIX CONTACT GmbH & Co. KG

Product(s)

Article No° Product Name Affected Version(s)
1151412 AXC F 1152 < 2021.0 LTS
2404267 AXC F 2152 < 2021.0 LTS
1046568 AXC F 2152 Starterkit < 2021.0 LTS
1069208 AXC F 3152 < 2021.0 LTS
1188165 PLCnext Technology Starterkit < 2021.0 LTS
1051328 RFC 4072S < 2021.0 LTS

Summary

Multiple vulnerabilities have been identified in PLCnext Control devices. Please consult the aforementioned CVE-IDs.

Vulnerabilities



Weakness
Improper Privilege Management (CWE-269)
Summary

On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS an attacker can use this vulnerability i.e. to open a reverse shell with root privileges.

Weakness
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (CWE-79)
Summary

On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS an authenticated low privileged user could embed malicious Javascript code to gain admin rights when the admin user visits the ...

Weakness
Improper Input Validation (CWE-20)
Summary

On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS a specially crafted LLDP packet may lead to a high system load in the PROFINET stack. An attacker can cause ...

Weakness
Exposure of Sensitive Information to an Unauthorized Actor (CWE-200)
Summary

On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS an attacker can use the knowledge gained by reading the insufficiently protected sensitive information to plan further attacks.

Impact

See Impact for the listed CVE-IDs.

Solution

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 our application note:
Measures to protect network-capable devices with Ethernet connection (PDF)

Solution

Phoenix Contact recommends affected users to upgrade to the current Firmware 2021.0 LTS or higher which fixes these vulnerabilities.

Reported by

The vulnerabilities CVE-2020-12517,-12518 and CVE-2020-12519 were discovered by Patrick Muench, Torsten Loebner, Maurice Rothe, Pascal Keul and Daniel Hackel of SVA Systemvertrieb Alexander GmbH.

CERT@VDE coordinated.