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Saint Empty Frames Flood
Hagiography in preparation at the scriptorium.
Feast day August 13
Technical record
- Disclosed on
- August 13 2019
- CVE
- CVE-2019-9518
- CVSS
- 7.5
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.
Sources: github.com