# CVE-2017-14438: Denial of service in Moxa

> An attacker can cause a denial of service on Moxa EDR-810 devices by sending a large packet to port 4000/tcp.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 May 2018
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-2rxv-434v-p63q

## What is CVE-2017-14438?

CVE-2017-14438 is a high-severity denial of service vulnerability in Talos Moxa, published on 14 May 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Exploitable denial of service vulnerabilities exists in the Service Agent functionality of Moxa EDR-810 V4.1 build 17030317. A specially crafted packet can cause a denial of service. An attacker can send a large packet to 4000/tcp to trigger this vulnerability.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2017-14438?

It affects 1 product.


Products: Moxa Edr-810 Firmware.

## How do I fix CVE-2017-14438?

No fix has been published for CVE-2017-14438 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-14438 being exploited?

There is no known exploitation of CVE-2017-14438 in the wild and no public exploit code.

## Other vulnerabilities in Talos Moxa

- [CVE-2018-16282](https://insights.sbomify.com/CVE-2018-16282/): Command injection in n/a (high 8.8)
- [CVE-2017-12120](https://insights.sbomify.com/CVE-2017-12120/): Command injection in Moxa (high 8.8)
- [CVE-2017-12121](https://insights.sbomify.com/CVE-2017-12121/): Command injection in Moxa (high 8.8)
- [CVE-2017-12125](https://insights.sbomify.com/CVE-2017-12125/): Command injection in Moxa (high 8.8)
- [CVE-2017-12126](https://insights.sbomify.com/CVE-2017-12126/): Cross-site request forgery in Moxa (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-14438 and fix it if it is affected.

What it is: CVE-2017-14438 is a high-severity denial of service vulnerability in Talos Moxa, published on 14 May 2018. 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-2017-14438 in the wild and no public exploit code.

Affected product: Talos Moxa. 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-2017-14438/ (Markdown: https://insights.sbomify.com/CVE-2017-14438/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-14438
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-14438
- OSV: https://osv.dev/vulnerability/CVE-2017-14438

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-14438/
Summaries are generated and may contain mistakes; the official description above is the record.