The vulnerability is related to an open-source logging tool used by Java programs.
added this vulnerability
The vulnerability was first discovered by Alibaba’s security team. Here’s what to know about the exploit and log4j.is an open-source tool used by Java programs for logging, or creating a record of everything an application has done. However—and here’s where this serious bug comes into play—if someone sends the library a command in the form of a special string of characters tucked within that data, instead of just logging that information, log4j will execute it as though it is code in a program.
Additionally, attackers can scan all of the websites on the internet to try and find ones that are responding to this special string of characters.
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