# CVE-2018-5401: Information disclosure in DCU-210E

> Attackers on the network can sniff unencrypted Modbus traffic to reveal sensitive configuration and sensor data from Auto-Maskin marine control devices.

- **Severity:** Critical 9.1 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Oct 2018
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-6w6w-jx93-4cwq

## What is CVE-2018-5401?

CVE-2018-5401 is a critical vulnerability in Auto-Maskin DCU-210E, published on 8 Oct 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Auto-Maskin DCU 210E, RP-210E, and Marine Pro Observer Android App transmit sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors. The devices transmit process control information via unencrypted Modbus communications. Impact: An attacker can exploit this vulnerability to observe information about configurations, settings, what sensors are present and in use, and other information to aid in crafting spoofed messages. Requires access to the network. Affected releases are Auto-Maskin DCU-210E, RP-210E, and Marine Pro Observer Android App. Versions prior to 3.7 on ARMv7.

Weakness: CWE-319 (Cleartext Transmission of Sensitive Information)

## Which versions are affected by CVE-2018-5401?

It affects 3 products.


Products: Auto-Maskin Dcu 210e Firmware, Auto-Maskin Marine Pro Observer, Auto-Maskin Rp 210e Firmware.

## How do I fix CVE-2018-5401?

No fix has been published for CVE-2018-5401 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-5401 being exploited?

There is no known exploitation of CVE-2018-5401 in the wild and no public exploit code.

## Other vulnerabilities in Auto-Maskin DCU-210E

- [CVE-2018-5400](https://insights.sbomify.com/CVE-2018-5400/): Missing authorization in DCU-210E (critical 9.1)
- [CVE-2018-5402](https://insights.sbomify.com/CVE-2018-5402/): Weak cryptography in DCU-210E (critical 9.1)
- [CVE-2019-6558](https://insights.sbomify.com/CVE-2019-6558/): Auth bypass in Auto-Maskin RP210E Versions 3.7 and prior DCU210E Versions 3.7 and prior and Marine Observer Pro (Android App) (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-5401 and fix it if it is affected.

What it is: CVE-2018-5401 is a critical vulnerability in Auto-Maskin DCU-210E, published on 8 Oct 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-2018-5401 in the wild and no public exploit code.

Affected product: Auto-Maskin DCU-210E. 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-2018-5401/ (Markdown: https://insights.sbomify.com/CVE-2018-5401/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-5401
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-5401
- OSV: https://osv.dev/vulnerability/CVE-2018-5401

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-5401/
Summaries are generated and may contain mistakes; the official description above is the record.