# About fix log4j2 vulnerabilities, use the parameter -Dlog4j2.formatMsgNoLookups=true

**URL:** https://discuss.elastic.co/t/about-fix-log4j2-vulnerabilities-use-the-parameter-dlog4j2-formatmsgnolookups-true/326271
**Category:** Elasticsearch
**Created:** [February 23, 2023, 7:11am UTC](https://discuss.elastic.co/t/about-fix-log4j2-vulnerabilities-use-the-parameter-dlog4j2-formatmsgnolookups-true/326271 "2023-02-23T07:11:05Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![qiuxb](https://avatars.discourse-cdn.com/v4/letter/q/48db29/32.png) [@qiuxb](https://discuss.elastic.co/u/qiuxb)
#### Post date: [February 23, 2023, 7:11am UTC](https://discuss.elastic.co/t/about-fix-log4j2-vulnerabilities-use-the-parameter-dlog4j2-formatmsgnolookups-true/326271/1 "2023-02-23T07:11:05Z")

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Currently, there are multiple ES versions in our online environment. To fix the logj2 vulnerability, we plan to add the parameter -Dlog4j2.formatMsgNoLookups=true to jvm.option. Do the following versions support this method of repair?  
6.2.4  
6.3.2  
6.4.1  
6.8.3  
7.2.0  
7.4.2

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### Author: ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [February 23, 2023, 7:17am UTC](https://discuss.elastic.co/t/about-fix-log4j2-vulnerabilities-use-the-parameter-dlog4j2-formatmsgnolookups-true/326271/2 "2023-02-23T07:17:28Z")

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Please see [Apache Log4j2 Remote Code Execution (RCE) Vulnerability - CVE-2021-44228 - ESA-2021-31](https://discuss.elastic.co/t/apache-log4j2-remote-code-execution-rce-vulnerability-cve-2021-44228-esa-2021-31/291476), [Elasticsearch 5.0.0-5.6.10 and 6.0.0-6.3.2: Log4j CVE-2021-44228, CVE-2021-45046 remediation](https://discuss.elastic.co/t/elasticsearch-5-0-0-5-6-10-and-6-0-0-6-3-2-log4j-cve-2021-44228-cve-2021-45046-remediation/292054) and [Apache Log4j2 Remote Code Execution (RCE) Vulnerability - CVE-2021-44228 - ESA-2021-31](https://discuss.elastic.co/t/apache-log4j2-remote-code-execution-rce-vulnerability-cve-2021-44228-esa-2021-31/291476) for mitigation approaches.

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### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)
#### Post date: [March 23, 2023, 7:17am UTC](https://discuss.elastic.co/t/about-fix-log4j2-vulnerabilities-use-the-parameter-dlog4j2-formatmsgnolookups-true/326271/3 "2023-03-23T07:17:34Z")

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