CVE-2019-9517

Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service. The attacker opens the HTTP/2 window so the peer can send without constraint; however, they leave the TCP window closed so the peer cannot actually write (many of) the bytes on the wire. The attacker then sends a stream of requests for a large response object. Depending on how the servers queue the responses, this can consume excess memory, CPU, or both.

Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service. The attacker opens the HTTP/2 window so the peer can send without constraint; however, they leave the TCP window closed so the peer cannot actually write (many of) the bytes on the wire. The attacker then sends a stream of requests for a large response object. Depending on how the servers queue the responses, this can consume excess memory, CPU, or both.

Algunas implementaciones HTTP / 2 son vulnerables al almacenamiento en búfer de datos interal sin restricciones, lo que puede conducir a una denegación de servicio. El atacante abre la ventana HTTP / 2 para que el par pueda enviar sin restricciones; sin embargo, dejan la ventana TCP cerrada para que el igual no pueda escribir (muchos de) los bytes en el cable. El atacante luego envía una secuencia de solicitudes para un objeto de respuesta grande. Dependiendo de cómo los servidores ponen en cola las respuestas, esto puede consumir un exceso de memoria, CPU o ambos.