# CVE-2024-4640: OnCell G3470A-LTE Series: Authenticated Command Injection via sendTestEmail

> An authenticated attacker can exploit a buffer overflow in the sendTestEmail function to execute arbitrary commands or crash the device.

- **Severity:** High 7.1 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H`)
- **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:** 25 Jun 2024
- **Updated:** 1 Aug 2024
- **Also known as:** GHSA-5cpc-fv98-27hq

## What is CVE-2024-4640?

CVE-2024-4640 is a high-severity command injection vulnerability in Moxa OnCell G3150A-LTE Series, published on 25 Jun 2024. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

OnCell G3470A-LTE Series firmware versions v1.7.7 and prior have been identified as vulnerable due to missing bounds checking on buffer operations. An attacker could write past the boundaries of allocated buffer regions in memory, causing a program crash.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2024-4640?

It affects 4 products.


Products: Moxa Oncell G3470a-Lte-Eu-T Firmware, Moxa Oncell G3470a-Lte-Eu Firmware, Moxa Oncell G3470a-Lte-Us-T Firmware, Moxa Oncell G3470a-Lte-Us Firmware.

## How do I fix CVE-2024-4640?

No fix has been published for CVE-2024-4640 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-4640 being exploited?

There is no known exploitation of CVE-2024-4640 in the wild and no public exploit code.

## Other vulnerabilities in Moxa OnCell G3150A-LTE Series

- [CVE-2018-11425](https://insights.sbomify.com/CVE-2018-11425/): Memory corruption in n/a (critical 9.8)
- [CVE-2021-39279](https://insights.sbomify.com/CVE-2021-39279/): Command injection in n/a (high 8.8)
- [CVE-2018-11424](https://insights.sbomify.com/CVE-2018-11424/): Memory corruption in n/a (high 7.5)
- [CVE-2024-4638](https://insights.sbomify.com/CVE-2024-4638/): OnCell G3470A-LTE Series: Authenticated Command Injection via webUploadKey (high 7.1)
- [CVE-2024-4639](https://insights.sbomify.com/CVE-2024-4639/): OnCell G3470A-LTE Series: Authenticated Command Injection via webDelIPSec (high 7.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-4640 and fix it if it is affected.

What it is: CVE-2024-4640 is a high-severity command injection vulnerability in Moxa OnCell G3150A-LTE Series, published on 25 Jun 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-4640 in the wild and no public exploit code.

Affected product: Moxa OnCell G3150A-LTE Series. 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-2024-4640/ (Markdown: https://insights.sbomify.com/CVE-2024-4640/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-4640
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-4640
- OSV: https://osv.dev/vulnerability/CVE-2024-4640

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-4640/
Summaries are generated and may contain mistakes; the official description above is the record.