Hello Team, I am using logstash 7.5.1 and having log4j jar as 2.11.1. Now as per doc https://discuss.elastic.co/ it is mentioned to remove JNDI class if we don't want to upgrade logstash. Is it possible if I can upgrade log4j jar to 2.15.0 in my current logstash version to mitigate this vulnerabili…

No, you can't just replace the jar with a newer version. Please read the security announcement about the Log4J exploit, there you will find how to mitigate the issue according to your Logstash/Elasticsearch version. If what you want to do is not mentioned there, then it is not recommended or teste…

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Replace Log4j from 2.11.0 to 2.15.0

Elastic Stack Logstash

d71247 (firas) December 15, 2021, 4:24pm 3

Topic		Replies	Views
How to update log4j jar in logstash installed in ubuntu VM Logstash	3	2530	January 11, 2022
Urgent - Incomplete fix for Apache Log4j vulnerability v2.15.0 Logstash	3	3546	January 19, 2022
How do I Mitigate LOG4J CVE on Elasticsearch 7.4.0? Elasticsearch	3	614	January 4, 2023
Apache Log4j2 Remote Code Execution (RCE) Vulnerability - CVE-2021-44228 - ESA-2021-31 Security Announcements	7	348145	November 4, 2022
When will the next patch be released for Elasticsearch Elasticsearch	8	1628	January 17, 2022

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Replace Log4j from 2.11.0 to 2.15.0

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