CVE-2023-33245

Minecraft through 1.19 and 1.20 pre-releases before 7 (Java) allow arbitrary file overwrite, and possibly code execution, via crafted world data that contains a symlink.

Weakness

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Affected Software

Potential Mitigations

• Follow the principle of least privilege when assigning access rights to entities in a software system.
• Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/132.html
• https://cwe.mitre.org/data/definitions/17.html
• https://cwe.mitre.org/data/definitions/35.html
• https://cwe.mitre.org/data/definitions/76.html

References

• https://help.minecraft.net/hc/en-us/articles/16165590199181
• https://vuln.ryotak.net/advisories/67
• https://www.minecraft.net/ja-jp/article/minecraft-1-20-pre-release-7