Untrusted Deserialization in ClipBucket-v5 Version 2.0 to 5.5.1 Revision 199

Vulnerability Description

ClipBucket V5 provides open source video hosting with PHP. ClipBucket-v5 Version 2.0 to Version 5.5.1 Revision 199 are vulnerable to PHP Deserialization vulnerability. The vulnerability exists in upload/photo_upload.php within the decode_key function. User inputs were supplied to this function without sanitization via collection GET parameter and photoIDS POST parameter respectively. The decode_key function invokes PHP unserialize function as defined in upload/includes/classes/photos.class.php. As a result, it is possible for an adversary to inject maliciously crafted PHP serialized object and utilize gadget chains to cause unexpected behaviors of the application. This vulnerability is fixed in 5.5.1 Revision 200.

References

• https://github.com/MacWarrior/clipbucket-v5/security/advisories/GHSA-4523-mqmv-wrqx
• https://github.com/MacWarrior/clipbucket-v5/commit/76a829c088f0813ab3244a3bd0036111017409b0