# CVE-2017-6017: Denial of service in Schneider Electric Modicon M340 PLC

> Remote attackers can cause Schneider Electric Modicon PLCs to freeze via crafted packets, requiring physical reset to recover.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:** 30 Jun 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-4v7w-jq2v-52pw

## What is CVE-2017-6017?

CVE-2017-6017 is a high-severity denial of service vulnerability in Schneider Electric Modicon M340 PLC, published on 30 Jun 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A Resource Exhaustion issue was discovered in Schneider Electric Modicon M340 PLC BMXNOC0401, BMXNOE0100, BMXNOE0110, BMXNOE0110H, BMXNOR0200H, BMXP341000, BMXP342000, BMXP3420102, BMXP3420102CL, BMXP342020, BMXP342020H, BMXP342030, BMXP3420302, BMXP3420302H, and BMXP342030H. A remote attacker could send a specially crafted set of packets to the PLC causing it to freeze, requiring the operator to physically press the reset button on the PLC in order to recover.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2017-6017?

It affects 15 products.


Products: Schneider-Electric Bmxnoc0401 Firmware, Schneider-Electric Bmxnoe0100 Firmware, Schneider-Electric Bmxnoe0110 Firmware, Schneider-Electric Bmxnoe0110h Firmware, Schneider-Electric Bmxnor0200h Firmware, Schneider-Electric Modicon M340 Bmxp341000 Firmware, Schneider-Electric Modicon M340 Bmxp342000 Firmware, Schneider-Electric Modicon M340 Bmxp3420102 Firmware, Schneider-Electric Modicon M340 Bmxp3420102cl Firmware, Schneider-Electric Modicon M340 Bmxp342020 Firmware, Schneider-Electric Modicon M340 Bmxp342020h Firmware, Schneider-Electric Modicon M340 Bmxp3420302 Firmware, Schneider-Electric Modicon M340 Bmxp3420302h Firmware, Schneider-Electric Modicon M340 Bmxp342030 Firmware, Schneider-Electric Modicon M340 Bmxp342030h Firmware.

## How do I fix CVE-2017-6017?

No fix has been published for CVE-2017-6017 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-6017 being exploited?

There is no known exploitation of CVE-2017-6017 in the wild and no public exploit code.

## Other vulnerabilities in Schneider Electric Modicon M340 PLC

- [CVE-2015-6461](https://insights.sbomify.com/CVE-2015-6461/): File upload in Schneider Electric Modicon PLC (medium 5.4)
- [CVE-2015-6462](https://insights.sbomify.com/CVE-2015-6462/): Cross-site scripting in Schneider Electric Modicon PLC (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-6017 and fix it if it is affected.

What it is: CVE-2017-6017 is a high-severity denial of service vulnerability in Schneider Electric Modicon M340 PLC, published on 30 Jun 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-2017-6017 in the wild and no public exploit code.

Affected product: Schneider Electric Modicon M340 PLC. 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-2017-6017/ (Markdown: https://insights.sbomify.com/CVE-2017-6017/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-6017
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-6017
- OSV: https://osv.dev/vulnerability/CVE-2017-6017

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-6017/
Summaries are generated and may contain mistakes; the official description above is the record.