# CVE-2024-0737: Xlightftpd Xlight FTP Server Login denial of service

> Remote attackers can cause a denial of service in Xlight FTP Server by manipulating the login user argument.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 Jan 2024
- **Updated:** 12 Sep 2024
- **Also known as:** GHSA-hjcg-5cvw-69qv

## What is CVE-2024-0737?

CVE-2024-0737 is a medium-severity denial of service vulnerability in Xlightftpd Xlight FTP Server, published on 19 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability classified as problematic was found in Xlightftpd Xlight FTP Server 1.1. This vulnerability affects unknown code of the component Login. The manipulation of the argument user leads to denial of service. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-251560.

Weakness: CWE-404 (Improper Resource Shutdown or Release)

## Which versions are affected by CVE-2024-0737?

It affects 1 product.


Products: Xlightftpd Xlight Ftp Server.

## How do I fix CVE-2024-0737?

No fix has been published for CVE-2024-0737 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-0737 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-0737 exists.

Public exploit code:

- Xlight FTP 1.1 - Denial Of Service (DOS) (exploitdb)

## Other vulnerabilities in Xlightftpd Xlight FTP Server

- [CVE-2019-25681](https://insights.sbomify.com/CVE-2019-25681/): Xlight FTP Server 3.9.1 SEH Overwrite Buffer Overflow (high 8.6)
- [CVE-2009-4795](https://insights.sbomify.com/CVE-2009-4795/): SQL injection in n/a (medium 6.8)
- [CVE-2010-2695](https://insights.sbomify.com/CVE-2010-2695/): Path traversal in n/a (medium 6.5)
- [CVE-2023-53886](https://insights.sbomify.com/CVE-2023-53886/): Xlight FTP Server 3.9.3.6 Stack Buffer Overflow Vulnerability via Execute Program (medium 5.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-0737 and fix it if it is affected.

What it is: CVE-2024-0737 is a medium-severity denial of service vulnerability in Xlightftpd Xlight FTP Server, published on 19 Jan 2024. 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-2024-0737 exists.

Affected product: Xlightftpd Xlight FTP Server. 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-2024-0737/ (Markdown: https://insights.sbomify.com/CVE-2024-0737/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-0737
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-0737
- OSV: https://osv.dev/vulnerability/CVE-2024-0737

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-0737/
Summaries are generated and may contain mistakes; the official description above is the record.