# CVE-2021-40964: Path traversal in n/a

> Attackers with admin credentials or via CSRF can use path traversal in the fullpath parameter to upload malicious files to arbitrary directories.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 15 Sep 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-fw9q-rwpp-xcw5

## What is CVE-2021-40964?

CVE-2021-40964 is a medium-severity path traversal vulnerability in n/a, published on 15 Sep 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A Path Traversal vulnerability exists in TinyFileManager all version up to and including 2.4.6 that allows attackers to upload a file (with Admin credentials or with the CSRF vulnerability) with the "fullpath" parameter containing path traversal strings (../ and ..\) in order to escape the server's intended working directory and write malicious files onto any directory on the computer.

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

## Which versions are affected by CVE-2021-40964?

It affects 1 product.


Products: Prasathmani Tiny File Manager.

## How do I fix CVE-2021-40964?

No fix has been published for CVE-2021-40964 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-40964 being exploited?

There is no known exploitation of CVE-2021-40964 in the wild and no public exploit code.

Public exploit code:

- Tiny File Manager 2.4.6 - Remote Code Execution (RCE) (exploitdb)
- Tiny File Manager <= 2.4.6 - Remote Code Execution (RCE) (github_poc): https://github.com/Z3R0space/CVE-2021-40964

## Other vulnerabilities in n/a

- [CVE-2022-40916](https://insights.sbomify.com/CVE-2022-40916/): Auth bypass in n/a (critical 9.8)
- [CVE-2022-45476](https://insights.sbomify.com/CVE-2022-45476/): File upload in Tiny File Manager (critical 9.8)
- [CVE-2022-23044](https://insights.sbomify.com/CVE-2022-23044/): Cross-site request forgery in Tiny File Manager (high 8.8)
- [CVE-2022-1000](https://insights.sbomify.com/CVE-2022-1000/): Path Traversal in prasathmani/tinyfilemanager (high 8.8)
- [CVE-2021-45010](https://insights.sbomify.com/CVE-2021-45010/): Path traversal in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-40964 and fix it if it is affected.

What it is: CVE-2021-40964 is a medium-severity path traversal vulnerability in n/a, published on 15 Sep 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-40964 in the wild and no public exploit code.

Affected product: n/a. 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-2021-40964/ (Markdown: https://insights.sbomify.com/CVE-2021-40964/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-40964
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-40964
- OSV: https://osv.dev/vulnerability/CVE-2021-40964

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-40964/
Summaries are generated and may contain mistakes; the official description above is the record.