Minecraft Java Log4j RCE 0-Day Vulnerability

On the 9th of October, a zero-day exploit affecting Minecraft Java servers and clients using versions 1.7 to 1.18.1 was discovered. This allows malicious users to execute commands on your server without needing to be an operator, through methods such as chat, which can affect your client as well.

Mojang has released a client-sided fix that will be automatically applied by restarting your launcher. Servers however, need to be updated to the latest version, or manually secured. You can find a list of server type versions we have patched so far, or ways to secure your server type below.

Note: This article will be updated continuously as server types are patched.

PATCHED

The following versions have been secured and are safe to play as normal (Note: These are only safe to play if selected from our server type dropdown. Using custom jars may not be protected).

  • Bungeecord
  • Paper Waterfall
  • Paper Velocity (Using the latest version of the official website)
  • CraftBukkit 1.18.2
  • Fabric 1.18.2
  • Fabric 1.18
  • Fabric 1.17.1
  • Fabric 1.17
  • Fabric 1.16.5
  • Fabric 1.16.4
  • Forge 1.18.2
  • Forge 1.18
  • Forge 1.17.1
  • Forge 1.16.5
  • Forge 1.15.2
  • Forge 1.14.4
  • Forge 1.13.2
  • Forge 1.12.2
  • Forge 1.10.2
  • Forge 1.8.9
  • Forge 1.7.10
  • Paper 1.18.2
  • Paper 1.18.1
  • Paper 1.18
  • Paper 1.17.1
  • Paper 1.16.5
  • Paper 1.15.2
  • Paper 1.14.4
  • Paper 1.13.2
  • Paper 1.12.2
  • Paper 1.10.2
  • Spigot 1.18.2
  • Spigot 1.18.1
  • Spigot 1.18
  • Spigot 1.17.1
  • Spigot 1.17
  • Spigot 1.16.5
  • Spigot 1.15.2
  • Spigot 1.14.4
  • Spigot 1.13.2
  • Spigot 1.12.2
  • Spigot 1.11.2
  • Spigot 1.10.2
  • Spigot 1.9.4
  • Spigot 1.8.8
  • Vanilla 1.7 - 1.18.2

UNPATCHED

Warning: The following versions have not been automatically secured and will require manual adjustments in order to be safe to play.

We are currently working on patching these versions. In the meantime, we recommend playing with whitelist enabled. To do so, follow our guide on How to Setup and Manage Whitelisting.

  • CraftBukkit 1.7-1.18
  • Custom Jar: Check the current patch status of the server jar you are using and follow the developer's instructions where needed.
  • Spigot 1.17
  • Spigot 1.16-1.16.4
  • Spigot 1.15-1.15.1
  • Spigot 1.14-1.14.3
  • Spigot 1.13-1.13.1
  • Spigot 1.12-1.12.1
  • Spigot 1.11-1.11.1
  • Spigot 1.10-1.10.1
  • Spigot 1.9-1.9.3
  • Spigot 1.8-1.8.7
  • Spigot 1.7-1.7.10
If you require any further assistance, please contact our support at: https://shockbyte.com/billing/submitticket.php

Mitchell Smith

Managing Director @ Shockbyte

  • 6 Users Found This Useful
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