CVE-2020-11080
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.
How to fix
- nghttp2 nghttp21.41.0 or later
- oracle blockchain_platform21.1.2 or later
- nodejs node.js10.21.0, 12.18.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| nghttp2 nghttp2 | v < 1.41.0 | 1.41.0 |
| debian debian_linux | 9.0, 10.0 | — |
| opensuse leap | 15.1 | — |
| fedoraproject fedora | 31, 33 | — |
| oracle banking_extensibility_workbench | 14.3.0, 14.4.0 | — |
| oracle blockchain_platform | v < 21.1.2 | 21.1.2 |
| oracle enterprise_communications_broker | 3.1.0, 3.2.0 | — |
| oracle graalvm | 19.3.2, 20.1.0 | — |
| oracle mysql | 7.3.0 ≤ v ≤ 7.3.30, 7.4.0 ≤ v ≤ 7.4.29, 7.5.0 ≤ v ≤ 7.5.19, 7.6.0 ≤ v ≤ 7.6.15, 8.0.0 ≤ v ≤ 8.0.21 | — |
| nodejs node.js | 10.0.0 ≤ v ≤ 10.12.0, 10.13.0 ≤ v < 10.21.0, 12.0.0 ≤ v ≤ 12.12.0, 12.13.0 ≤ v < 12.18.0, 14.0.0 ≤ v ≤ 14.4.0 | 10.21.0, 12.18.0 |
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