Apache Traffic Server Allocation of Resources Without Limits or Throttling Vulnerability - CVE-2019-9518

Some HTTP/2 implementations are vulnerable to a flood of empty frames potentially leading to a denial of service. The attacker sends a stream of frames with an empty payload and without the end-of-stream flag. These frames can be DATA HEADERS CONTINUATION and/or PUSH_PROMISE. The peer spends time processing each frame disproportionate to attack bandwidth. This can consume excess CPU.