CVE-2023-22318
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedDenial of service in Webconf in Tribe29 Checkmk Appliance before 1.6.5.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceThis is a Denial of Service vulnerability in the Webconf component of the Tribe29 Checkmk Appliance. The vulnerability is exploitable remotely without authentication and allows an attacker to crash or make the Webconf service unavailable. The issue is fixed in version 1.6.5 of the Checkmk Appliance.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 1.6.5CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check Checkmk Appliance firmware versionAccess the appliance admin interface or check the system information page to identify the currently installed firmware version. This is typically found under System > About or System > Maintenance in the web GUI, or via the CLI using 'omd version' if accessible.Affected if The installed version is any version prior to 1.6.5 (e.g., 1.6.0, 1.6.1, 1.6.4, etc.)
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Confirm Webconf component is exposedVerify that the Webconf service is accessible on the network. This service typically listens on port 80/443 for the appliance management interface. Check network exposure and firewall rules.Affected if The Webconf component is reachable from a network where untrusted actors could send requests to it.
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Identify if this is a Checkmk Appliance deploymentConfirm the target system is a Tribe29 Checkmk Appliance (hardware or virtual appliance) and not a raw Checkmk installation. Checkmk Appliance is a specific product that bundles Checkmk in a hardened appliance format.Affected if The system is a Tribe29 Checkmk Appliance running firmware below version 1.6.5.
You are affected if your Tribe29 Checkmk Appliance is running firmware version 1.6.4 or lower and the Webconf service is network-accessible.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped1.6.5
Upgrade the Tribe29 Checkmk Appliance to version 1.6.5 or later to remediate this vulnerability.
1.6.5
- Obtain Checkmk Appliance Firmware version 1.6.5 or later from the official Checkmk download portal
- Access the Checkmk Appliance administrative interface
- Navigate to the firmware update or system update section
- Upload and apply the firmware version 1.6.5
- Verify the update was successful and the Webconf service is operational
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,512.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-22318 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-22318 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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