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

> Attackers can bypass path sanitization to access or modify arbitrary files on the host system via directory traversal in CraftOS-PC 2 on Windows.

- **Severity:** High 8.2 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 16 Aug 2024
- **Updated:** 19 Aug 2024
- **Also known as:** GHSA-hr3w-wc83-6923

## What is CVE-2024-43395?

CVE-2024-43395 is a high-severity path traversal vulnerability in MCJack123 craftos2, published on 16 Aug 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official 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.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2024-43395?


## How do I fix CVE-2024-43395?

No fix has been published for CVE-2024-43395 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-43395 being exploited?

There is no known exploitation of CVE-2024-43395 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-43395 and fix it if it is affected.

What it is: CVE-2024-43395 is a high-severity path traversal vulnerability in MCJack123 craftos2, published on 16 Aug 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2024-43395 in the wild and no public exploit code.

Affected product: MCJack123 craftos2. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-43395/ (Markdown: https://insights.sbomify.com/CVE-2024-43395/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-43395
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-43395
- OSV: https://osv.dev/vulnerability/CVE-2024-43395

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-43395/
Summaries are generated and may contain mistakes; the official description above is the record.