Log4Shell is a 0-day vulnerability in the Log4j Java library that allows attackers to download and run scripts on targeted servers, leaving them open to complete remote control. After a user posted a proof-of-concept (PoC) on Twitter, Bitdefender’s honeypots started to register attacks using the PoC, underlining just how severe this vulnerability is.
Log4j is not just another Java library. It’s embedded in servers and services from all over the world, used by companies such as Apple, Amazon, Cloudflare, Steam, various Apache server types, ElasticSearch, and many others.
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