# CVE-2003-0343: Information disclosure in n/a

> Remote attackers can enumerate valid usernames via distinct error messages, facilitating brute-force attacks against the FTP server.

- **Severity:** Medium 4.6 (`AV:L/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:** 23 May 2003
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-7gj4-4645-h286

## What is CVE-2003-0343?

CVE-2003-0343 is a medium-severity vulnerability in n/a, published on 23 May 2003. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

BlackMoon FTP Server 2.6 Free Edition, and possibly other distributions and versions, generates an "Account does not exist" error message when an invalid username is entered, which makes it easier for remote attackers to conduct brute force attacks.

## Which versions are affected by CVE-2003-0343?

It affects 1 product.


Products: Selom Ofori Blackmoon Ftp Server.

## How do I fix CVE-2003-0343?

No fix has been published for CVE-2003-0343 yet. Limit exposure of the affected software until one is available.

## Is CVE-2003-0343 being exploited?

There is no known exploitation of CVE-2003-0343 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2002-0126](https://insights.sbomify.com/CVE-2002-0126/): Memory corruption in n/a (high 7.5)
- [CVE-2003-0342](https://insights.sbomify.com/CVE-2003-0342/): Hardcoded credentials in n/a (medium 4.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2003-0343 and fix it if it is affected.

What it is: CVE-2003-0343 is a medium-severity vulnerability in n/a, published on 23 May 2003. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2003-0343 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-2003-0343/ (Markdown: https://insights.sbomify.com/CVE-2003-0343/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2003-0343
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2003-0343
- OSV: https://osv.dev/vulnerability/CVE-2003-0343

---
From sbomify Insights: https://insights.sbomify.com/CVE-2003-0343/
Summaries are generated and may contain mistakes; the official description above is the record.