# CVE-2023-37549: CODESYS: Improper Input Validation in CmpApp component

> Authenticated attackers can cause denial of service in CODESYS runtime systems by sending crafted network requests that trigger invalid memory reads.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 3 Aug 2023
- **Updated:** 11 Oct 2024
- **Also known as:** GHSA-5p2g-c66c-57rh

## What is CVE-2023-37549?

CVE-2023-37549 is a medium-severity denial of service vulnerability in Codesys Control for Beaglebone Sl, published on 3 Aug 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

In multiple Codesys products in multiple versions, after successful authentication as a user, specific crafted network communication requests with inconsistent content can cause the CmpApp component to read internally from an invalid address, potentially leading to a denial-of-service condition. This vulnerability is different to CVE-2023-37545, CVE-2023-37546, CVE-2023-37547, CVE-2023-37548 and CVE-2023-37550

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2023-37549?

It affects 16 products.


Products: Codesys Control for Beaglebone Sl, Codesys Control for Empc-A\/Imx6 Sl, Codesys Control for Iot2000 Sl, Codesys Control for Linux Sl, Codesys Control for Pfc100 Sl, Codesys Control for Pfc200 Sl, Codesys Control for Plcnext Sl, Codesys Control for Raspberry Pi Sl, Codesys Control for Wago Touch Panels 600 Sl, Codesys Control Rte Sl, Codesys Control Rte Sl \(For Beckhoff Cx\), Codesys Control Runtime System Toolkit, Codesys Control Win Sl, Codesys Development System, Codesys Hmi, Codesys Safety Sil2.

## How do I fix CVE-2023-37549?

No fix has been published for CVE-2023-37549 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-37549 being exploited?

There is no known exploitation of CVE-2023-37549 in the wild and no public exploit code.

## Other vulnerabilities in Codesys Control for Beaglebone Sl

- [CVE-2019-9010](https://insights.sbomify.com/CVE-2019-9010/): Missing authorization in n/a (critical 9.8)
- [CVE-2018-10612](https://insights.sbomify.com/CVE-2018-10612/): Misconfiguration in 3S-Smart Software Solutions GmbH CODESYS Control V3 products prior to version 3.5.14.0 (critical 9.8)
- [CVE-2023-6357](https://insights.sbomify.com/CVE-2023-6357/): OS Command Injection in multiple CODESYS products (high 8.8)
- [CVE-2022-4046](https://insights.sbomify.com/CVE-2022-4046/): CODESYS: Improper memory restrictions fro CODESYS Control (high 8.8)
- [CVE-2022-47379](https://insights.sbomify.com/CVE-2022-47379/): CODESYS: Multiple products prone to out-of-bounds write (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-37549 and fix it if it is affected.

What it is: CVE-2023-37549 is a medium-severity denial of service vulnerability in Codesys Control for Beaglebone Sl, published on 3 Aug 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-37549 in the wild and no public exploit code.

Affected product: Codesys Control for Beaglebone Sl. 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-2023-37549/ (Markdown: https://insights.sbomify.com/CVE-2023-37549/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-37549
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-37549
- OSV: https://osv.dev/vulnerability/CVE-2023-37549

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-37549/
Summaries are generated and may contain mistakes; the official description above is the record.