Summary
Incorrect handling request with non-standard symbols allows remote attackers to initiate a complete lock up of the bus coupler. Authentication of the request is not required.
Details
Impact
The device stops responding to any network or local port, consequently shutting down this part of the automation system. The bus coupler needs to be restarted by disconnecting the power supply.
Mitigation
Customers using affected Phoenix Contact AXL F BK are recommended to operate the devices in closed networks or protected with a suitable firewall.
For detailed information on our recommendations for measures to protect network-cabable devices, please refer to our application note:
https://www.phoenixcontact.com/assets/downloads_ed/local_pc/web_dwl_technical_info/ah_en_%20industrial_security_107913_en_01.pdf
Vulnerabilities 1
-
Unscored —
An issue was discovered on PHOENIX CONTACT AXL F BK PN <=1.0.4, AXL F BK ETH <= 1.12, and AXL F BK ETH XC <= 1.11 devic…
Revision history
-
#1
Initial revision.
References
-
VDE-2018-015: Phoenix Contact: AXL F BK PN Denial of Service Vulnerability - HTML
https://certvde.com/en/advisories/VDE-2018-015/
-
Vendor PSIRT
https://phoenixcontact.com/psirt
-
CERT@VDE Security Advisories for Phoenix Contact GmbH & Co. KG
https://certvde.com/en/advisories/vendor/phoenixcontact/