CVE-2017-14704

published 2017-09-26

CVE-2017-14704: Multiple unrestricted file upload vulnerabilities in the (1) imageSubmit and (2) proof_submit functions in Claydip Laravel Airbnb Clone 1.0 allow remote…

Priority P2 66 high 8.8 CVSS 3.0

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

EXPLOIT

Multiple unrestricted file upload vulnerabilities in the (1) imageSubmit and (2) proof_submit functions in Claydip Laravel Airbnb Clone 1.0 allow remote authenticated users to execute arbitrary code by uploading a file with an executable extension, then accessing it via a direct request to the file in images/profile.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
claydip	airbnb_clone	—	—

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

path images/profile/↗

url http://localhost/[PATH]/user/edit/uploadphoto↗

url http://localhost/[PATH]/user/edit/uploadproof↗

path images/profile/[$timestamp].Php↗

path /images/profile↗

path /images/proof↗

• → Monitor POST requests to the uploadphoto and uploadproof endpoints for file uploads containing executable extensions (e.g., .php, .Php, .phtml) in the 'profile_img_name' field, which bypass the validation applied only in imageSubmit but not in proof_submit. ↗
• → The proof_submit function performs NO mime/extension validation before moving the uploaded file, making it the more trivially exploitable vector. Alert on any non-image file extension uploaded via POST to user/edit/uploadproof. ↗
• → Detect direct GET requests to /images/profile/ or /images/proof/ for files with executable extensions (e.g., .php, .Php, .phtml, .php5) — this is the webshell access pattern following a successful upload. ↗
• → The uploaded filename is constructed as a timestamp concatenated with the original client-supplied filename. Monitor for timestamp-prefixed PHP files (e.g., YYYY-MM-DD-HH-MM-SS-shell.php) appearing under the images/profile or images/proof directories. ↗
• → Case-variation bypass (e.g., .Php) may evade naive extension blocklists. Ensure detection rules are case-insensitive when matching executable extensions in uploaded filenames. ↗

• · The imageSubmit function includes a validation rule for mime types (jpeg, png, jpg, gif, svg), but this validation is applied to the field named 'image', NOT to 'profile_img_name' — the actual field used for the file move. This means the validation is effectively bypassed regardless of input. ↗
• · The proof_submit function contains zero server-side validation of file type or extension before writing the file to the public web root, making it unconditionally exploitable by any authenticated user. ↗

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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