# CVE-2016-8367: Denial of service in Schneider Electric Magelis HMI

> An attacker can exhaust web server connections on Schneider Electric Magelis HMI panels, causing a denial of service.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 Feb 2017
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-97r7-8j3p-vc44

## What is CVE-2016-8367?

CVE-2016-8367 is a medium-severity denial of service vulnerability in Schneider Electric Magelis HMI, published on 13 Feb 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 Schneider Electric Magelis HMI Magelis GTO Advanced Optimum Panels, all versions, Magelis GTU Universal Panel, all versions, Magelis STO5xx and STU Small panels, all versions, Magelis XBT GH Advanced Hand-held Panels, all versions, Magelis XBT GK Advanced Touchscreen Panels with Keyboard, all versions, Magelis XBT GT Advanced Touchscreen Panels, all versions, and Magelis XBT GTW Advanced Open Touchscreen Panels (Windows XPe). An attacker can open multiple connections to a targeted web server and keep connections open preventing new connections from being made, rendering the web server unavailable during an attack.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2016-8367?

It affects 8 products.


Products: Schneider-Electric Magelis Gto Advanced Optimum Panel Firmware, Schneider-Electric Magelis Gtu Universal Panel Firmware, Schneider-Electric Magelis Sto5 Small Panel Firmware, Schneider-Electric Magelis Stu Small Panel Firmware, Schneider-Electric Magelis Xbt Gh Advanced Hand-Held Panel Firmware, Schneider-Electric Magelis Xbt Gk Advanced Touchscreen Panel With Keyboard Firmware, Schneider-Electric Magelis Xbt Gt Advanced Touchscreen Panel Firmware, Schneider-Electric Magelis Xbt Gtw Advanced Open Touchscreen Panel Firmware.

## How do I fix CVE-2016-8367?

No fix has been published for CVE-2016-8367 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-8367 being exploited?

There is no known exploitation of CVE-2016-8367 in the wild and no public exploit code.

Public exploit code:

- Schneider Electric Magelis HMI Resource Consumption Vulnerabilities [ICSA-16-308-02, CVE-2016-8367, CVE-2016-8374] (github_poc): https://github.com/0xICF/PanelShock

## Other vulnerabilities in Schneider Electric Magelis HMI

- [CVE-2016-8374](https://insights.sbomify.com/CVE-2016-8374/): Denial of service in Schneider Electric Magelis HMI (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-8367 and fix it if it is affected.

What it is: CVE-2016-8367 is a medium-severity denial of service vulnerability in Schneider Electric Magelis HMI, published on 13 Feb 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-2016-8367 in the wild and no public exploit code.

Affected product: Schneider Electric Magelis HMI. 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-2016-8367/ (Markdown: https://insights.sbomify.com/CVE-2016-8367/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-8367
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-8367
- OSV: https://osv.dev/vulnerability/CVE-2016-8367

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From sbomify Insights: https://insights.sbomify.com/CVE-2016-8367/
Summaries are generated and may contain mistakes; the official description above is the record.