# CVE-2023-4227: ioLogik 4000 Series: Existence of an Unauthorized Service

> Attackers can gain unauthorized access to Moxa ioLogik devices via an exposed service, leading to data theft and manipulation.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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:** 24 Aug 2023
- **Updated:** 28 Oct 2024
- **Also known as:** GHSA-wxp5-9w64-pp68

## What is CVE-2023-4227?

CVE-2023-4227 is a medium-severity missing authorization vulnerability in Moxa ioLogik 4000 Series, published on 24 Aug 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability has been identified in the ioLogik 4000 Series (ioLogik E4200) firmware versions v1.6 and prior, which can be exploited by malicious actors to potentially gain unauthorized access to the product. This could lead to security breaches, data theft, and unauthorized manipulation of sensitive information. The vulnerability is attributed to the presence of an unauthorized service, which could potentially enable unauthorized access to the. device.

Weakness: CWE-863 (Incorrect Authorization), CWE-489 (Active Debug Code)

## Which versions are affected by CVE-2023-4227?

It affects 1 product.


Products: Moxa Iologik E4200 Firmware.

## How do I fix CVE-2023-4227?

No fix has been published for CVE-2023-4227 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-4227 being exploited?

There is no known exploitation of CVE-2023-4227 in the wild and no public exploit code.

## Other vulnerabilities in Moxa ioLogik 4000 Series

- [CVE-2023-4230](https://insights.sbomify.com/CVE-2023-4230/): ioLogik 4000 Series: Server Banner Information Disclosure (medium 5.3)
- [CVE-2023-4229](https://insights.sbomify.com/CVE-2023-4229/): ioLogik 4000 Series: Session Headers Not Implemented (medium 4.3)
- [CVE-2023-4228](https://insights.sbomify.com/CVE-2023-4228/): ioLogik 4000 Series: Session Cookies Attribute Not Set Properly (low 3.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-4227 and fix it if it is affected.

What it is: CVE-2023-4227 is a medium-severity missing authorization vulnerability in Moxa ioLogik 4000 Series, published on 24 Aug 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-2023-4227 in the wild and no public exploit code.

Affected product: Moxa ioLogik 4000 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-2023-4227/ (Markdown: https://insights.sbomify.com/CVE-2023-4227/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-4227
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-4227
- OSV: https://osv.dev/vulnerability/CVE-2023-4227

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-4227/
Summaries are generated and may contain mistakes; the official description above is the record.