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CVE-2020-11080

Published: 2020-06-03T23:15Z
Last Modified: 2024-11-21T04:56Z
Source: MITRE CVE List
License: MITRE-CVE-TOS
In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection. > MITRE Terms of Use apply – see LICENSE‑MITRE.txt