By Eduard Kovacs on April 06, 2017
Programmable logic controllers (PLCs) from several major vendors are affected by implementation flaws that can be exploited by attackers to execute arbitrary commands on the vulnerable devices, researchers warned.
The vulnerabilities, identified by ICS security firm CRITIFENCE, are related to the Modbus communications protocol, which is often used for connecting industrial devices. The company has been criticized for leading people to believe that ransomware attacks leveraging the flaws had already been spotted in the wild.
According to CRITIFENCE, devices from several companies are vulnerable to attacks, including Schneider Electric, GE and Rockwell Automation’s Allen-Bradley.
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