What is Log4j Vulnerability? Definition, Prevention, How dangerous is?, How is Log4j Build?

Log4j Vulnerability

What is Log4j?

Last week, a vulnerability was found in Log4j, an open-source logging library commonly used by apps and services on the Internet.

 

This allows a Remote Code Execution (RCE) that allows attackers to execute arbitrary code on the host.

 

How Dangerous Is The Vulnerability?

Experts are saying that this could allow sensitive data to be taken out in certain circumstances.

 

In a few words, the vulnerability could allow data theft or unauthorized deletion of data from a device by cybercriminals.

 

The flaw allows a hacker or cyber-criminal to control and execute 'arbitrary code' and gain access to a computer system by inputting a string of code into a library.

 

Researchers have said that exploits for this flaw already exist and are already being used for crypto-mining scams.

 

Who Is Affected By The Vulnerability?

According to researchers, most enterprises and web services from Apple's iCloud to Google Cloud products, etc. have had a flawed impact.

 

Systems and services that use the Java logging library are all affected between Apache Log4j 2 version 2.0-beta 9 and 2, 14, 1.

 

How is Log4j Build?

Log4j is built into popular frameworks, including Apache Struts2 and others.

 

With its widespread adoption, many third-party apps are potentially vulnerable, with a huge attack surface.

 

How to Prevent It?

The researchers are recommending that all customers with Log4j version 2.15.0 and below need to update to 2.16.0 as soon as possible.

 

Make sure your devices and apps are as updated as possible and continue to update them regularly, especially over the next few weeks.

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