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Gentoo Linux Security Advisory                           GLSA 202312-02
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                                           https://security.gentoo.org/
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 Severity: High
    Title: Minecraft Server: Remote Code Execution
     Date: December 20, 2023
     Bugs: #828936
       ID: 202312-02

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Synopsis
========

A vulnerability has been found in Minecraft Server which leads to remote
code execution.

Background
==========

Minecraft Server is the official server for the sandbox video game.

Affected packages
=================

Package                        Vulnerable    Unaffected
-----------------------------  ------------  ------------
games-server/minecraft-server  < 1.18.1      >= 1.18.1

Description
===========

A vulnerability has been discovered in Minecraft Server. Please review
the CVE identifier referenced below for details.

Impact
======

Vulnerable Minecraft Server versions include a bundled version of log4j
which is vulnerable to remote code execution.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Minecraft Server users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=games-server/minecraft-server-1.18.1"

References
==========

[ 1 ] CVE-2021-4104
      https://nvd.nist.gov/vuln/detail/CVE-2021-4104

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202312-02

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2023 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5/