# CVE-2022-24040: Denial of service in Desigo DXR2

> An attacker with user privileges can cause a denial of service by setting an excessively high PBKDF2 cost factor, leading to CPU exhaustion during login attempts.

- **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:** 10 May 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-gvmv-rhmr-mw99

## What is CVE-2022-24040?

CVE-2022-24040 is a medium-severity denial of service vulnerability in Siemens Desigo DXR2, published on 10 May 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability has been identified in Desigo DXR2 (All versions < V01.21.142.5-22), Desigo PXC3 (All versions < V01.21.142.4-18), Desigo PXC4 (All versions < V02.20.142.10-10884), Desigo PXC5 (All versions < V02.20.142.10-10884). The web application fails to enforce an upper bound to the cost factor of the PBKDF2 derived key during the creation or update of an account. An attacker with the user profile access privilege could cause a denial of service (DoS) condition through CPU consumption by setting a PBKDF2 derived key with a remarkably high cost effort and then attempting a login to the so-modified account.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2022-24040?

It affects 4 products.


Products: Siemens Desigo Dxr2 Firmware, Siemens Desigo Pxc3 Firmware, Siemens Desigo Pxc4 Firmware, Siemens Desigo Pxc5 Firmware.

## How do I fix CVE-2022-24040?

No fix has been published for CVE-2022-24040 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-24040 being exploited?

There is no known exploitation of CVE-2022-24040 in the wild and no public exploit code.

## Other vulnerabilities in Siemens Desigo DXR2

- [CVE-2022-24042](https://insights.sbomify.com/CVE-2022-24042/): Auth bypass in Desigo DXR2 (critical 9.1)
- [CVE-2021-41545](https://insights.sbomify.com/CVE-2021-41545/): Denial of service in Desigo DXR2 (high 7.5)
- [CVE-2022-24044](https://insights.sbomify.com/CVE-2022-24044/): Auth bypass in Desigo DXR2 (high 7.5)
- [CVE-2022-24041](https://insights.sbomify.com/CVE-2022-24041/): Weak cryptography in Desigo DXR2 (medium 6.5)
- [CVE-2022-24045](https://insights.sbomify.com/CVE-2022-24045/): Information disclosure in Desigo DXR2 (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-24040 and fix it if it is affected.

What it is: CVE-2022-24040 is a medium-severity denial of service vulnerability in Siemens Desigo DXR2, published on 10 May 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-24040 in the wild and no public exploit code.

Affected product: Siemens Desigo DXR2. 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-2022-24040/ (Markdown: https://insights.sbomify.com/CVE-2022-24040/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-24040
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-24040
- OSV: https://osv.dev/vulnerability/CVE-2022-24040

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-24040/
Summaries are generated and may contain mistakes; the official description above is the record.