CVE-2017-14839

published 2017-09-28

CVE-2017-14839: TeamWork Photo Fusion allows Arbitrary File Upload in changeAvatar and changeCover.

Priority P2 62 high 8.8 CVSS 3.0

AV N AC L PR L UI N S U C H I H A H

EXPLOIT

TeamWork Photo Fusion allows Arbitrary File Upload in changeAvatar and changeCover.

Detection & IOCs extracted from sources · hover to see the quote

path uploads/↗

• → Arbitrary file upload via the changeAvatar endpoint — no file type validation is performed; any file extension is accepted and stored using the client-supplied original filename. ↗
• → Arbitrary file upload via the changeCover endpoint — same lack of validation; uploaded file is moved to the 'uploads' directory under its original client-supplied name. ↗
• → Uploaded malicious files are publicly accessible under the /uploads/ directory; monitor web server logs for POST requests to changeAvatar or changeCover followed by GET requests to /uploads/ for non-image file extensions (e.g., .php, .phtml, .asp). ↗
• → Vulnerability is exploitable by any authenticated user; monitor for authenticated POST requests uploading non-image MIME types or dangerous file extensions to the changeAvatar and changeCover functions. ↗

• · The exploit does not specify a fixed version number; all known releases of Photo Fusion (Free Stock Photos Script) by TeamWork Tec are considered affected. ↗
• · Authentication is required to trigger the vulnerability — the upload endpoints check Auth::user() before proceeding, so unauthenticated exploitation is not possible. ↗

CVSS provenance

nvd v3.0 8.8 HIGH CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd v2.0 6.5 MEDIUM AV:N/AC:L/Au:S/C:P/I:P/A:P

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