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How can you identify what version of log4j your server is running?

What command(s) can you execute on the the server that will locate the version of log4j your instance of Jira is running? 

3 answers

I'm investigating whether our JIRA instance is affected by any abnormal Log4Shell (Log4j) activity. We did a recent test upgrade from JIRA Core (server) 6.2.6 to 6.4.6 during which the file checker reported the usual modified and added files, and the list looks ok... and when I do a search in the Install directory, I only find 3 files:, log4jkit.class, and Log4jWarnEvaluator.class all have timestamp of 6/2/2015, so look to not have been modified. I'm thinking we have Version 1 of Log4j.

Hi @shane-nz 

To check the log4j version of the server you can use:

sudo find / -name 'log4j*'

I hope it will help you

0 votes
skavatekar Atlassian Team Dec 13, 2021

Check the file under <Installation_Dir>/atlassian-jira/WEB-INF/lib/ folder for log4j*.jar

Hi @skavatekar , There is only one file matching your criteria on the location mentioned  by you and  that is log4j2-stacktrace-origins-2.2-atlassian-2.jar

What is the base log4j jar used by this jar?

Check the file under <Installation_Dir>/lib

You should find log4j-1.2.17-atlassian-3.jar

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