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.
No analysis available yet.
Remediation
No remediation available yet.
Tracking
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Advisories
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-2786-1 | nghttp2 security update |
Debian DLA |
DLA-3621-1 | nghttp2 security update |
Debian DSA |
DSA-4696-1 | nodejs security update |
EUVD |
EUVD-2020-3444 | 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. |
Ubuntu USN |
USN-6142-1 | nghttp2 vulnerability |
References
History
Mon, 09 Jun 2025 16:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2025-06-09T15:45:50.711Z
Reserved: 2020-03-30T00:00:00.000Z
Link: CVE-2020-11080
Updated: 2024-08-04T11:21:14.514Z
Status : Modified
Published: 2020-06-03T23:15:11.073
Modified: 2024-11-21T04:56:44.657
Link: CVE-2020-11080
OpenCVE Enrichment
No data.
Debian DLA
Debian DSA
EUVD
Ubuntu USN