CVE-2019-9515 — Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service
Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service. The attacker sends a stream of SETTINGS frames to the peer. Since the…
Published: 2019-08-13 · CVSS: 7.5 · CVSS 3.0
Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service. The attacker sends a stream of SETTINGS frames to the peer. Since the RFC requires that the peer reply with one acknowledgement per SETTINGS frame, an empty SETTINGS frame is almost equivalent in behavior to a ping. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7