Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service. The attacker sends continual pings to an HTTP/2 peer, causing the peer to build an internal queue of responses. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.

References[email protected][email protected][email protected][email protected]/message/4BBP27PZGSY6OP6D26E5FW4GZKBFHNU7/[email protected]/message/4ZQGHE3WTYLYAYJEIDJVF2FIGQTAYPMC/[email protected]/message/CMNFX5MNYRWWIMO4BTKYQCGUDMHO3AXP/[email protected]/message/LYO6E3H34C346D2E443GLXK7OK6KIYIQ/


Source: MITRE

Published: 2019-08-13

Updated: 2020-12-09

Type: CWE-400

Risk Information

CVSS v2.0

Base Score: 7.8

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Impact Score: 6.9

Exploitability Score: 10

Severity: HIGH

CVSS v3.0

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH