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Logging Library for Millions of Apps has a Significant Vulnerability

Millions of devices are vulnerable to attacks because of a vulnerability called Log4Shell in the open-source log library Log4j. As The Verge notes, apps and services keep track of all events that happen while they're running, providing them with the ability to see how their program is performing and to figure out the cause of errors. Log4j is a popular and widely used logging library and even popular cloud services such as Steam and iCloud as well as apps like Amazon, Twitter and Minecraft are reportedly vulnerable to attacks that exploit Log4Shell.



According to Ars Technica, it first came to light after Minecraft websites began to report about an issue that allowed hackers to execute malicious code within the game. It was soon apparent however, that the issue doesn't impact Minecraft only. Security researcher Marcus Hutchins, who helped stop the spread of the WannaCry malware, called the vulnerability "extremely grave" since millions of applications utilize Log4j for logging.



Bad actors could use it to remotely execute programs on servers, which could cause them to download and execute malware that could compromise companies as well as personal information. MINECRAFT SERVER LISTS It's easy to attack and can be triggered by simply posting messages. Hutchins said that in the case of Minecraft the attackers were capable of running code remotely by posting a message on the chatbox. In a blog post the app security firm LunaSec claimed that triggering the vulnerability in Apple's servers is as simple as changing the iPhone's name.



Log4j has already issued a fix for the vulnerability, and affected services like Minecraft and Cloudflare have already rolled out patches to safeguard users. Those running their own networks with Log4j may also want to update their systems at the soonest possible time, if they are able.


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