Description
An unauthenticated remote peer can crash any NIOWebSocket-based server (including Vapor and Hummingbird) with a single 11-byte frame sent after a completed WebSocket handshake, dropping all active connections until the process restarts. This vulnerability is addressed in swift-nio version 2.101.0.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apple | swift-nio | < 2.101.0 | 2.101.0 |