# CVE-2023-3206: Chengdu VEC40G denial of service

> Remote attackers can cause a denial of service on Chengdu VEC40G devices by manipulating the restart parameter in the send_order.cgi endpoint.

- **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:** 12 Jun 2023
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-w4q9-8q4f-fh7h

## What is CVE-2023-3206?

CVE-2023-3206 is a medium-severity denial of service vulnerability in Chengdu VEC40G, published on 12 Jun 2023. 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 Chengdu VEC40G 3.0. Affected by this vulnerability is an unknown functionality of the file /send_order.cgi?parameter=restart. The manipulation of the argument restart with the input reboot leads to denial of service. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-231229 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-77 (Improper Neutralization of Special Elements used in a Command), CWE-404 (Improper Resource Shutdown or Release)

## Which versions are affected by CVE-2023-3206?

It affects 1 product.


Products: Feiyuxing Vec40g Firmware.

## How do I fix CVE-2023-3206?

No fix has been published for CVE-2023-3206 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-3206 being exploited?

There is no known exploitation of CVE-2023-3206 in the wild and no public exploit code.

## Other vulnerabilities in Chengdu VEC40G

- [CVE-2023-2522](https://insights.sbomify.com/CVE-2023-2522/): Chengdu VEC40G Network Detection os command injection (medium 4.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-3206 and fix it if it is affected.

What it is: CVE-2023-3206 is a medium-severity denial of service vulnerability in Chengdu VEC40G, published on 12 Jun 2023. 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-2023-3206 in the wild and no public exploit code.

Affected product: Chengdu VEC40G. 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-2023-3206/ (Markdown: https://insights.sbomify.com/CVE-2023-3206/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-3206
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-3206
- OSV: https://osv.dev/vulnerability/CVE-2023-3206

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-3206/
Summaries are generated and may contain mistakes; the official description above is the record.