*URGENT* Minecraft Vulnerability - Zero-Day Exploit

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3 years ago
1

Very Important security update for Minecraft Servers and users!

For pre 1.16 MC servers you need to do something different: https://discuss.playit.gg/t/update-your-minecraft-servers-security-issues/91/2?u=patrick

If you're running a Minecraft server please update your run.bat file and add -Dlog4j2.formatMsgNoLookups=true. There is a Java Exploit out in the wild.

Example

Old:

java -Xmx1024M -Xms1024M -jar server.jar nogui

New:

java -Xmx1024M -Xms1024M -Dlog4j2.formatMsgNoLookups=true -
jar server.jar nogui

More details on security vulnerability: https://arstechnica.com/information-technology/2021/12/minecraft-and-other-apps-face-serious-threat-from-new-code-execution-bug/

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