Phoenix Contact ILC PLC Authentication Vulnerabilities

CVEs (2)

Remediations

• Phoenix Contact has released an update for Webvisit to mitigate the plaintext password storage issue. Users may obtain this update by contacting Phoenix Contact customer support at (mailto:[email protected]), or +49 52 81/9 46 28 88 Germany.
• Connecting devices to a network via Ethernet always entails the risk of unauthorized access to the network. Phoenix Contact recommends that users implement an adequate defense–in-depth networking architecture (including the following) for control systems where these devices are operating: Devices should not be exposed to public networks without the use of virtual private networks (VPNs) for remote access. Firewalls should be used for network segmentation or controller isolation. Available communication channels or ports not needed in the application should be turned off. Administrators and users should check whether the application offers any option of deactivating active communication channels (e.g., SNMP, FTP, BootP, DCP), or setting passwords to prevent third parties from unauthorized accessing the controller and modifying the system. Access to the devices should be limited to the fewest possible authorized personnel. Change standard or default passwords when first installing every component. Passwords should be changed in regular interval in order to reduce risks of becoming public. Passwords should have a maximum strength by the use of small and capital letters as well as numbers and special characters with a length of at least 10 characters. Conduct regular thread analyses to discover whether current measures meet the safety requirements. Install and maintain security software in order to defend new or recurring risks
• such as viruses, Trojans, phishing attacks. Users may decide to use the ILC 1x1 PLCs with the latest Firmware 4.42, because it offers the HTTPS protocol and HTML5 for the web server-based HMI system. With regard to the controller's communication interfaces, Phoenix Contact recommends not to use the ILC 1xx controller in safety-critical applications unless using additional security devices.
• For more information on this vulnerability and the associated update and mitigation strategies, please email Phoenix Contact at the following address: (mailto:[email protected])

Affected Vendors

Affected Products (1)