# CVE-2023-22318: Denial of service against webconf

> Attackers can cause a denial of service in the Checkmk Appliance webconf component, requiring an upgrade to mitigate.

- **Severity:** High 7.5 (`CVSS:3.1/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:** 15 May 2023
- **Updated:** 23 Jan 2025
- **Also known as:** GHSA-h3cr-2x3p-h22w, UBUNTU-CVE-2023-22318

## What is CVE-2023-22318?

CVE-2023-22318 is a high-severity denial of service vulnerability in Tribe29 Checkmk Appliance, published on 15 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Denial of service in Webconf in Tribe29 Checkmk Appliance before 1.6.5.

Weakness: CWE-667 (Improper Locking), CWE-412 (Unrestricted Externally Accessible Lock)

## Which versions are affected by CVE-2023-22318?

It affects 1 product.


Products: Tribe29 Checkmk Appliance Firmware.

## How do I fix CVE-2023-22318?

No fix has been published for CVE-2023-22318 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-22318 being exploited?

There is no known exploitation of CVE-2023-22318 in the wild and no public exploit code.

## Other vulnerabilities in Tribe29 Checkmk Appliance

- [CVE-2023-22309](https://insights.sbomify.com/CVE-2023-22309/): Reflected Cross Site Scripting (XSS) (medium 6.1)
- [CVE-2023-22307](https://insights.sbomify.com/CVE-2023-22307/): Site-Passwords in GET parameters (medium 5.5)
- [CVE-2023-6287](https://insights.sbomify.com/CVE-2023-6287/): Backup password in GET parameter (low 3.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-22318 and fix it if it is affected.

What it is: CVE-2023-22318 is a high-severity denial of service vulnerability in Tribe29 Checkmk Appliance, published on 15 May 2023. 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-2023-22318 in the wild and no public exploit code.

Affected product: Tribe29 Checkmk Appliance. 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-2023-22318/ (Markdown: https://insights.sbomify.com/CVE-2023-22318/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-22318
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-22318
- OSV: https://osv.dev/vulnerability/CVE-2023-22318

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-22318/
Summaries are generated and may contain mistakes; the official description above is the record.