AI Summary

A configuration file with hardcoded machineKey values allowed hackers to launch a specific type of cyberattack. This vulnerability enabled the exploitation of a zero-day vulnerability in a web application, resulting in the deployment of a web shell. The web shell is a tool used by hackers to gain unauthorized access and control over a system. The specific details of the attack and the affected application are not provided, but the presence of hardcoded machineKey values in a configuration file is highlighted as a key factor in the successful exploitation of the zero-day vulnerability.

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