# CVE-2000-0640: Path traversal in n/a

> Remote attackers can determine the existence of files outside the FTP root directory via path traversal techniques.

- **Severity:** High 7.5 (`AV:N/AC:L/Au:N/C:P/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 Oct 2000
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-pfr8-644q-f99g

## What is CVE-2000-0640?

CVE-2000-0640 is a high-severity path traversal vulnerability in n/a, published on 13 Oct 2000. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Guild FTPd allows remote attackers to determine the existence of files outside the FTP root via a .. (dot dot) attack, which provides different error messages depending on whether the file exists or not.

## Which versions are affected by CVE-2000-0640?

It affects 1 product.


Products: Steve Poulsen Guildftpd.

## How do I fix CVE-2000-0640?

No fix has been published for CVE-2000-0640 yet. Limit exposure of the affected software until one is available.

## Is CVE-2000-0640 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2000-0640 exists.

Public exploit code:

- DrPhibez and Nitro187 Guild FTPD 0.9.7 - File Existence Disclosure (exploitdb)

## Other vulnerabilities in n/a

- [CVE-2006-5133](https://insights.sbomify.com/CVE-2006-5133/): Memory corruption in n/a (high 7.5)
- [CVE-2001-0770](https://insights.sbomify.com/CVE-2001-0770/): Memory corruption in n/a (high 7.5)
- [CVE-2003-1267](https://insights.sbomify.com/CVE-2003-1267/): Denial of service in n/a (medium 5.0)
- [CVE-2001-0769](https://insights.sbomify.com/CVE-2001-0769/): Denial of service in n/a (medium 5.0)
- [CVE-2001-0767](https://insights.sbomify.com/CVE-2001-0767/): Path traversal in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2000-0640 and fix it if it is affected.

What it is: CVE-2000-0640 is a high-severity path traversal vulnerability in n/a, published on 13 Oct 2000. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2000-0640 exists.

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-2000-0640/ (Markdown: https://insights.sbomify.com/CVE-2000-0640/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2000-0640
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2000-0640
- OSV: https://osv.dev/vulnerability/CVE-2000-0640

---
From sbomify Insights: https://insights.sbomify.com/CVE-2000-0640/
Summaries are generated and may contain mistakes; the official description above is the record.