# CVE-2023-34406: Integer overflow in n/a

> An attacker with local USB access can cause a denial of service in Mercedes Benz NTG 6 head units via an integer overflow in user data import/export.

- **Severity:** Low 3.3 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 13 Feb 2025
- **Updated:** 17 Mar 2025
- **Also known as:** GHSA-fc4h-jq3v-6rrg

## What is CVE-2023-34406?

CVE-2023-34406 is a low-severity vulnerability in n/a, published on 13 Feb 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

An issue was discovered on Mercedes Benz NTG 6. A possible integer overflow exists in the user data import/export function of NTG (New Telematics Generation) 6 head units. To perform this attack, local access to USB interface of the car is needed. With prepared data, an attacker can cause the User-Data service to fail. The failed service instance will restart automatically.

Weakness: CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2023-34406?

It affects 1 product.


Products: Mercedes-Benz Headunit Ntg6 Mercedes-Benz User Experience.

## How do I fix CVE-2023-34406?

No fix has been published for CVE-2023-34406 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-34406 being exploited?

There is no known exploitation of CVE-2023-34406 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2023-34399](https://insights.sbomify.com/CVE-2023-34399/): Integer overflow in n/a (critical 9.8)
- [CVE-2023-34402](https://insights.sbomify.com/CVE-2023-34402/): Path traversal in n/a (high 7.7)
- [CVE-2023-34397](https://insights.sbomify.com/CVE-2023-34397/): Denial of service in n/a (high 7.5)
- [CVE-2023-34398](https://insights.sbomify.com/CVE-2023-34398/): Null dereference in n/a (high 7.5)
- [CVE-2023-34400](https://insights.sbomify.com/CVE-2023-34400/): Null dereference in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-34406 and fix it if it is affected.

What it is: CVE-2023-34406 is a low-severity vulnerability in n/a, published on 13 Feb 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-34406 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-2023-34406/ (Markdown: https://insights.sbomify.com/CVE-2023-34406/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-34406
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-34406
- OSV: https://osv.dev/vulnerability/CVE-2023-34406

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-34406/
Summaries are generated and may contain mistakes; the official description above is the record.