CVE-2024-0643
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 · uneditedUnrestricted upload of dangerous file types in the C21 Live Encoder and Live Mosaic product, version 5.3. This vulnerability allows a remote attacker to upload different file extensions without any restrictions, resulting in a full system compromise.
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 confidenceUnrestricted file upload vulnerability in C21 Live Encoder and Live Mosaic v5.3 allows remote attackers to upload files with any extension without validation, potentially enabling arbitrary code execution and full system compromise.
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= 5.3CVSS 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
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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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Identify Cires21 Live Encoder installationCheck for Cires21 Live Encoder installation directories, services, or running processes on the system. Common locations include C:\Program Files\Cires21 or /opt/cires21 on Linux. Also check for associated services named 'Cires21' or 'LiveEncoder'.Affected if Cires21 Live Encoder version 5.3 is installed and running on the system
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Verify installed versionCheck the installed version through the application's About dialog, installed programs list, or by examining version information in the application binaries or configuration files. Compare against version 5.3.Affected if The installed version is exactly 5.3
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Locate web upload interfaceIdentify if the application exposes a web interface or API endpoint for file uploads. Check for HTTP/HTTPS listeners on common ports (8080, 8090, 80, 443) or examine the application's configuration for upload-related endpoints.Affected if The application's web upload interface is accessible over the network
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Test upload functionality without restrictionsIf a web upload feature is accessible, attempt to upload a test file with an executable extension (.asp, .php, .exe, .jsp, .exe) to see if the upload succeeds without validation. Inspect the application's response and the uploaded file location.Affected if Files with arbitrary extensions can be uploaded without validation or rejection
A system is affected if Cires21 Live Encoder version 5.3 is installed and its file upload functionality is exposed and permits unrestricted file uploads.
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.
From vendor dataImplement strict allowlist-based file type validation including magic byte verification, store uploads outside web root, and disable script execution in upload directories.
- Consultation8.0 h
- Implementation24.0 h
- Testing12.0 h
- Review / QA6.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $14,080.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-0643 — 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-2024-0643 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
- No spam, self-promotion, credentials, or personal data