CVE-2017-14399
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 · uneditedIn BlackCat CMS 1.2.2, unrestricted file upload is possible in backend\media\ajax_rename.php via the extension parameter, as demonstrated by changing the extension from .jpg to .php.
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 confidenceBlackCat CMS 1.2.2 contains an unrestricted file upload vulnerability in backend/media/ajax_rename.php. The extension parameter is not properly validated, allowing attackers to rename uploaded files with executable extensions (e.g., .php), leading to arbitrary code execution.
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= 1.2.2CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:L/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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Verify BlackCat CMS versionLocate the version file or admin interface (typically includes a version.php, README, or admin dashboard footer) and compare to 1.2.2Affected if The installed version is exactly 1.2.2
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Confirm vulnerable script existsCheck for the file /backend/media/ajax_rename.php in the web root directoryAffected if The ajax_rename.php file exists and is accessible via the web server
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Check media upload functionality is enabledVerify the media/ajax_rename.php endpoint responds by attempting a request or reviewing backend configuration for media management featuresAffected if The media rename functionality is enabled and accessible to authenticated users
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Verify uploads directory is web-accessibleIdentify the media upload directory (commonly /media/ or /pages/media/) and confirm it is served by the web server without execution restrictionsAffected if Uploaded files can be accessed via HTTP and the server executes PHP files in the upload directory
If running BlackCat CMS 1.2.2 with the ajax_rename.php script present and the media upload directory web-accessible, the unrestricted file upload vulnerability is present and exploitable.
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 whitelist-based file extension validation on the server-side and ensure uploaded files are stored outside web-accessible directories or have executable permissions removed.
- Consultation3.0 h
- Implementation6.0 h
- Testing4.0 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 $4,224.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-14399 — 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-2017-14399 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