How to know if I have "log4j"?

I just read about a severe security vulnerability in something called “log4j” from Apache. I have a LAMP droplet and I need to know how to find out if log4j is installed on the droplet? I don’t see a package by that name, but I’m not sure if I’m looking for the right thing.

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Bobby Iliev
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December 13, 2021
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Hi all,

In addition to what has already been mentioned, I could suggest taking a look at this answer here:

What should I do to protect against CVE-2021-44228/Log4shell vulnerability with Apache Log4j?

Best, Bobby

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December 11, 2021

Hello, @JigsawBob

From what I can see Apache log4j 2 is an open-source Java-based logging framework that should not be installed by default on your Apache server, hence you’ve not manually installed/configured it then CVE-2021-44228 should not affect your server.

Regards, Alex

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Hi JigsawBob, log4j is not installed as part of the standard LAMP stack. Unless you installed it yourself it is not on your server so you don’t need to do anything.