Securing energy metering software with automatic source code correction

Industry is using power meters to monitor the consumption of energy and achieving cost savings. This monitoring often involves energy metering software with a web interface. However, web applications often have vulnerabilities that can be exploited by cyber-attacks. We present an approach and a tool to solve this problem by analyzing the application source code and automatically inserting fixes to remove the discovered vulnerabilities. We demonstrate the use of the tool with two open source energy metering applications in which it found and corrected 17 vulnerabilities. By looking in more detail into some of these vulnerabilities, we argue that they are very serious, leading to the following impacts: violation of user privacy, counter the benefits of energy metering, and serve as entering points for attacks on other user software.