# CVE-2017-6023: Memory corruption in Fatek Automation PLC Ethernet Module

> A stack-based buffer overflow in Fatek PLC Ethernet modules allows remote attackers to execute arbitrary code or crash the device.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Mar 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-jwfc-gwh4-6qmp

## What is CVE-2017-6023?

CVE-2017-6023 is a critical memory corruption vulnerability in Fatek Automation PLC Ethernet Module, published on 16 Mar 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue was discovered in Fatek Automation PLC Ethernet Module. The affected Ether_cfg software configuration tool runs on the following Fatek PLCs: CBEH versions prior to V3.6 Build 170215, CBE versions prior to V3.6 Build 170215, CM55E versions prior to V3.6 Build 170215, and CM25E versions prior to V3.6 Build 170215. A stack-based buffer overflow vulnerability has been identified, which may allow remote code execution or crash the affected device.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer), CWE-121 (Stack-based Buffer Overflow)

## Which versions are affected by CVE-2017-6023?

It affects 4 products.


Products: Fatek Ethernet Module Configuration Tool Cbe Firmware, Fatek Ethernet Module Configuration Tool Cbeh Firmware, Fatek Ethernet Module Configuration Tool Cm25e Firmware, Fatek Ethernet Module Configuration Tool Cm55e Firmware.

## How do I fix CVE-2017-6023?

No fix has been published for CVE-2017-6023 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-6023 being exploited?

There is no known exploitation of CVE-2017-6023 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-6023 and fix it if it is affected.

What it is: CVE-2017-6023 is a critical memory corruption vulnerability in Fatek Automation PLC Ethernet Module, published on 16 Mar 2017. 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-2017-6023 in the wild and no public exploit code.

Affected product: Fatek Automation PLC Ethernet Module. 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-2017-6023/ (Markdown: https://insights.sbomify.com/CVE-2017-6023/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-6023
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-6023
- OSV: https://osv.dev/vulnerability/CVE-2017-6023

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-6023/
Summaries are generated and may contain mistakes; the official description above is the record.