# CVE-2009-3643: Denial of service in n/a

> Remote attackers can cause a denial of service in XM Easy Personal FTP Server by sending long arguments to LIST or NLST commands.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:N/I:N/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Oct 2009
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-3vxp-49m8-73gc

## What is CVE-2009-3643?

CVE-2009-3643 is a medium-severity denial of service vulnerability in n/a, published on 9 Oct 2009. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Dxmsoft XM Easy Personal FTP Server 5.8.0 allows remote attackers to cause a denial of service via a long argument to the (1) LIST and (2) NLST commands, a differnt issue than CVE-2008-5626 and CVE-2006-5728.

## Which versions are affected by CVE-2009-3643?

It affects 1 product.


Products: Dxmsoft Xm Easy Personal Ftp Server.

## How do I fix CVE-2009-3643?

No fix has been published for CVE-2009-3643 yet. Limit exposure of the affected software until one is available.

## Is CVE-2009-3643 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-3643 exists.

Public exploit code:

- XM Easy Personal FTP Server 5.8.0 - Denial of Service (Metasploit) (exploitdb)

## Other vulnerabilities in n/a

- [CVE-2007-1195](https://insights.sbomify.com/CVE-2007-1195/): Memory corruption in n/a (high 7.5)
- [CVE-2006-2225](https://insights.sbomify.com/CVE-2006-2225/): Memory corruption in n/a (high 7.5)
- [CVE-2006-6750](https://insights.sbomify.com/CVE-2006-6750/): Memory corruption in n/a (medium 5.0)
- [CVE-2006-6751](https://insights.sbomify.com/CVE-2006-6751/): Denial of service in n/a (medium 5.0)
- [CVE-2006-2226](https://insights.sbomify.com/CVE-2006-2226/): Memory corruption in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2009-3643 and fix it if it is affected.

What it is: CVE-2009-3643 is a medium-severity denial of service vulnerability in n/a, published on 9 Oct 2009. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-3643 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-2009-3643/ (Markdown: https://insights.sbomify.com/CVE-2009-3643/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2009-3643
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2009-3643
- OSV: https://osv.dev/vulnerability/CVE-2009-3643

---
From sbomify Insights: https://insights.sbomify.com/CVE-2009-3643/
Summaries are generated and may contain mistakes; the official description above is the record.