GHSA-QH5X-RFWF-RVFV Hysteria vulnerable to server crash when max_datagram_frame_size very small

Summary An authenticated client can crash the Hysteria server by advertising a very small QUIC maxdatagramframesize and then triggering a UDP response from the server. When the server tries to send the UDP response back via QUIC DATAGRAM, quic-go returns DatagramTooLargeError. The server then...

Hysteria: A specially constructed quic package can crash the server OOM when the sniff is enabled

Summary A specially constructed quic package can crash the server OOM when the sniff is enabled. Details When the server has sniff enabled, a valid connection can request the server to forward UDP traffic and construct a huge crypto length. The server will allocate memory according to this length...