# CVE-2019-13946: Denial of service in Development/Evaluation Kits for PROFINET IO: DK Standard Ethernet Controller

> Remote attackers can cause denial of service on Siemens PROFINET IO devices by exhausting memory via diagnostic requests.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Feb 2020
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-8fqx-3qjr-87gw

## What is CVE-2019-13946?

CVE-2019-13946 is a high-severity denial of service vulnerability in Siemens Development/Evaluation Kits for PROFINET IO: DK Standard Ethernet Controller, published on 11 Feb 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Profinet-IO (PNIO) stack versions prior V06.00 do not properly limit
internal resource allocation when multiple legitimate diagnostic package
requests are sent to the DCE-RPC interface.
This could lead to a denial of service condition due to lack of memory
for devices that include a vulnerable version of the stack.

The security vulnerability could be exploited by an attacker with network
access to an affected device. Successful exploitation requires no system
privileges and no user interaction. An attacker could use the vulnerability
to compromise the availability of the device.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2019-13946?

It affects 52 products.


Products: Siemens Dk Standard Ethernet Controller, Siemens Ek-Ertec 200 Firmware, Siemens Ek-Ertec 200p Firmware, Siemens Im 154-3 Pn Hf Firmware, Siemens Im 154-4 Pn Hf Firmware, Siemens Profinet Driver, Siemens Ruggedcom Rm1224 Firmware, Siemens Scalance M-800 Firmware, Siemens Scalance S615 Firmware, Siemens Scalance W700 Ieee 802.11n Firmware, Siemens Scalance X-200irt Firmware, Siemens Scalance X-300 Firmware, Siemens Scalance X-400 Firmware, Siemens Scalance Xb-200 Firmware, Siemens Scalance Xc-200 Firmware, Siemens Scalance Xf-200 Firmware, Siemens Scalance Xf-200ba Firmware, Siemens Scalance Xm-400 Firmware, Siemens Scalance Xp-200 Firmware, Siemens Scalance Xr-300wg Firmware and 32 more.

## How do I fix CVE-2019-13946?

No fix has been published for CVE-2019-13946 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-13946 being exploited?

There is no known exploitation of CVE-2019-13946 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-13946 and fix it if it is affected.

What it is: CVE-2019-13946 is a high-severity denial of service vulnerability in Siemens Development/Evaluation Kits for PROFINET IO: DK Standard Ethernet Controller, published on 11 Feb 2020. 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-2019-13946 in the wild and no public exploit code.

Affected product: Siemens Development/Evaluation Kits for PROFINET IO: DK Standard Ethernet Controller. 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-2019-13946/ (Markdown: https://insights.sbomify.com/CVE-2019-13946/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-13946
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-13946
- OSV: https://osv.dev/vulnerability/CVE-2019-13946

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-13946/
Summaries are generated and may contain mistakes; the official description above is the record.