CVE-2024-53564
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 · uneditedA vulnerability was discovered in FreePBX 17.0.19.17. It does not verify the type of uploaded (valid FreePBX module) files, allowing high-privilege administrators to insert unwanted files. NOTE: the Supplier's position is that there is no risk beyond what high-privilege administrators are intentionally allowed to do.
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 · high confidenceFreePBX 17.0.19.17 lacks proper file type validation during module uploads, allowing authenticated high-privilege administrators to upload arbitrary files disguised as valid module packages. This bypasses expected module verification controls.
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= 17.0.19.17CVSS 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
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:H/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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Check FreePBX versionRun `grep -r "VERSION" /etc/freepbx.conf` or access Admin > System Admin > Version in the web interface to confirm the installed version is exactly 17.0.19.17Affected if The installed version is 17.0.19.17 exactly, indicating the specific patch version lacking proper file type validation
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Verify module upload feature existsNavigate to Admin > Module Administration in the FreePBX web interface, or check for the /admin/config.php?type=tool&module=modules page accessAffected if The Module Administration interface is accessible and functional, indicating the upload vector is present
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Confirm admin privilege levelCheck if the logged-in administrator has high-privilege access (Admin > User Management to verify role permissions include module management/upload rights)Affected if The authenticated user has high-privilege administrative rights enabling module upload capability
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Inspect module upload handlingReview the PHP source files in /var/www/html/admin/modules/ directory, specifically any upload handling code in the module admin functionality, for lack of MIME type or magic byte validationAffected if The module upload code does not perform MIME type checking or file signature (magic byte) verification on uploaded files
A user is affected if they are running FreePBX version 17.0.19.17 and have authenticated high-privilege administrators with access to the Module Administration upload feature, as the missing file type validation allows arbitrary 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 file type validation using MIME type checking and file signature (magic byte) verification for uploaded module files, alongside existing module integrity checks.
- Consultation3.0 h
- Implementation6.0 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 $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-53564 — 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-2024-53564 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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