AVideo-Encoder vulnerable to stored DOM cross-site scripting through queue titles

Overview

AVideo is a video-sharing Platform. Prior to 8.1.0, view/queue.php uses pathinfo on the caller-controlled fileURI and stores its filename through setTitle in encoder_queue.title without neutralization. fileURI is not in the objects/security.php filter lists, and the Login::canUpload() capability needed to submit a queue entry can be self-granted using an attacker-controlled login site without legitimate encoder credentials. view/index.php loads queue.json from view/queue.json.php into the #grid jQuery Bootgrid table; its title formatter concatenates row.title into raw cell HTML. An attacker can therefore store an HTML title whose event handler runs in a privileged viewer's browser. Encoder::getAll limits nonadministrators to their own streamer's rows, so the victim must be an administrator who sees all rows or an operator on the attacker's streamer. A second .html() sink in the progress panel uses the same title but additionally depends on a helper script loaded from the streamer; the Bootgrid sink is reachable from encoder code alone. The script can read session-visible data and rendered streamer credentials, act with the viewer's privileges, and execute again for each qualifying viewer until the row is removed. This issue is fixed in version 8.1.0.

Affected

• AVideo-Encoder < 8.1.0

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.