# CVE-2023-4929: NPort 5000 Series Firmware Improper Validation of Integrity Check Vulnerability

> Attackers can manipulate firmware updates due to insufficient integrity checks, gaining control of Moxa NPort device servers.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 3 Oct 2023
- **Updated:** 23 Sep 2024
- **Also known as:** GHSA-38q7-2rwv-hhrw

## What is CVE-2023-4929?

CVE-2023-4929 is a medium-severity vulnerability in Moxa NPort 5000AI-M12 Series, published on 3 Oct 2023. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

All firmware versions of the NPort 5000 Series are affected by an improper validation of integrity check vulnerability. This vulnerability results from insufficient checks on firmware updates or upgrades, potentially allowing malicious users to manipulate the firmware and gain control of devices.

Weakness: CWE-354 (Improper Validation of Integrity Check Value)

## Which versions are affected by CVE-2023-4929?

It affects 108 products.


Products: Moxa Nport 5110-T Firmware, Moxa Nport 5110 Firmware, Moxa Nport 5110a-T Firmware, Moxa Nport 5110a Firmware, Moxa Nport 5130 Firmware, Moxa Nport 5130a-T Firmware, Moxa Nport 5130a Firmware, Moxa Nport 5150 Firmware, Moxa Nport 5150a-T Firmware, Moxa Nport 5150a Firmware, Moxa Nport 5150ai-M12-Ct-T Firmware, Moxa Nport 5150ai-M12-Ct Firmware, Moxa Nport 5150ai-M12-T Firmware, Moxa Nport 5150ai-M12 Firmware, Moxa Nport 5210-T Firmware, Moxa Nport 5210 Firmware, Moxa Nport 5210a-T Firmware, Moxa Nport 5210a Firmware, Moxa Nport 5230-T Firmware, Moxa Nport 5230 Firmware and 88 more.

## How do I fix CVE-2023-4929?

No fix has been published for CVE-2023-4929 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-4929 being exploited?

There is no known exploitation of CVE-2023-4929 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-4929 and fix it if it is affected.

What it is: CVE-2023-4929 is a medium-severity vulnerability in Moxa NPort 5000AI-M12 Series, published on 3 Oct 2023. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-4929 in the wild and no public exploit code.

Affected product: Moxa NPort 5000AI-M12 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-2023-4929/ (Markdown: https://insights.sbomify.com/CVE-2023-4929/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-4929
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-4929
- OSV: https://osv.dev/vulnerability/CVE-2023-4929

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-4929/
Summaries are generated and may contain mistakes; the official description above is the record.