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.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: certcc
Published: 2019-08-13T20:50:59
Updated: 2024-08-04T21:54:44.675Z
Reserved: 2019-03-01T00:00:00
Link: CVE-2019-9517
Vulnrichment
No data.
NVD
Status : Modified
Published: 2019-08-13T21:15:12.647
Modified: 2024-11-21T04:51:47.327
Link: CVE-2019-9517
Redhat