In this article we will take a look at Log4j vulnerability to see if you are at risk
Log4j are you at risk?
What Is Log4j?
Log4j is nothing but a type of open source software. It’s written in JAVA and tons of websites and apps around the world use this free software. we will take a look at this so you can determine if you are at risk.
Now, the problem is that JAVA is an immensely popular language. On top of that, the software is free. Hence, 80% of computers and applications on this globe can get affected by this software.
Log4j is also called Log4shell. On December 1, 2021, some experts have found about the Log4Shell vulnerabilities. Though, the reports were made on December 10.
Alibaba group first found the Log4j threat issue. The official name of this threat is – CVE-2021-44228 (developed by Apache Software Foundation).
How Does It Work?
To understand Log4Shell, you should first know how Log4j works!
So, let’s start with an example.
If you have played Minecraft, then you must have logged-in. The server observes and records all your �log in’ information and the commands you type. Now, here comes the Log4j. The server uses the Log4j software to watch over your activities.
Now, imagine a hacker abuses the custom code (used for formatting) and steals every information you have on the server.
This was just an example. But, the reality is, an attacker can control various types of computer activities by submitting different types of codes using third party servers.
Why Log4j Is Called The Biggest Security Threat So Far?
1.It’s So Common
The first and foremost problem is that this code is frequently used in the software. In old times, software developers used to create codes. But, now some codes are common.
Likewise, the Log4j is a common and free part of many software. That’s why it can be found on some advanced software.
This is not good news. A common java code with vulnerabilities is easy to hack. Therefore, almost 80 to 90 percent of java programs using this (code) open-source software are at risk.
2.It can Take Control Of Your Computer (Remote Code Execution)
Hackers can install malicious programs and they can steal your data at any time. Furthermore, attackers can also take control of your computer. So, if you are using the internet applications, then you could be the next victim.
3.The Perfect CVSS Score
CVSS stands for common vulnerability scoring system. It asses – how dangerous a threat could be! Unfortunately, the CVSS has given a perfect 10 out of 10 after testing the Log4j. Hence, it’s an alarming situation.
4.The Biggest IT Names Are Having A Nightmare
Log4j is used by Amazon, Microsoft, Cisco, Apple, Cloudflare, Netapp, and by more giant IT companies.
Now, Microsoft has already smelt that its Minecraft is at risk. Likewise, Google cloud and other big names in the IT world are also reviewing their systems.
These companies know that Log4j can control a server completely. Hence, they are taking the threat seriously.
Log4j version 2 is a logging library and it’s used by almost all IT companies.
You can say that Log4j version 2 is a kind of journal and it tracks almost all kinds of system activities. Once this �ubiquitous’ library is exploited, the full system can be under a hacker’s control. So, the Log4j vulnerabilities can cause catastrophic damages worldwide.
Log4j: Are You At Risk?
If you are a casual computer user, then you shouldn’t be worried. But, if you run a (software application or website) server, then yes you are at risk.
Log4j is a simple java program. But, it has immense capabilities. So, try to take every precaution to avoid Log4j vulnerabilities.
Who Is Affected?
IT companies, online gaming platforms, cloud services, source code developers, website security systems, and more IT services can get affected by Log4j.
A ‘reverse shell’ or ‘botnet’ can help an attacker to successfully hijack a system. Furthermore, logging is a basic feature of a system. So, millions of computers and servers worldwide are now at risk. Even, a novice attacker can exploit Log4j and take control of a complete system.
How Can You Build A Protection Against Log4j?
You have to update the entire system. Some companies (like Cisco) have updated their systems. A company can also use the latest version of the software.
A company can use ‘patching’ to fix the issue. But, it would not be an easy task. Because without the help of system operators and your software developers, you can’t find a patch for Log4j vulnerabilities.
It may take some time. But, if Log4j is manually removed from your software then, you can have a permanent solution. Usually, Log4j comes as a part of another software. So, only an expert system administrator with keen eyes can find out about Log4j.
You can talk to your company’s software developers. You can ask them if there is any threat issue with their software. You should also ask them to update your software and to repair the software on time. Following these methods, you can get at least a chance to protect your computers and servers from Log4j vulnerabilities.