vulnerability
Ubuntu: USN-6142-1 (CVE-2020-11080): nghttp2 vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:N/I:N/A:P) | Jun 3, 2020 | Jun 7, 2023 | Nov 15, 2024 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
Jun 3, 2020
Added
Jun 7, 2023
Modified
Nov 15, 2024
Description
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.
Solution(s)
ubuntu-pro-upgrade-libnghttp2-14ubuntu-pro-upgrade-libnghttp2-devubuntu-pro-upgrade-nghttp2ubuntu-pro-upgrade-nghttp2-clientubuntu-pro-upgrade-nghttp2-proxyubuntu-pro-upgrade-nghttp2-server
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