Maple Labs

CVE search · CVE-2020-11080

CVE-2020-11080

high 7.5

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.

Open in the NVD CVE.org JSON

Details

Status
Modified
Published
Last changed
Source
security-advisories@github.com
Weakness
CWE-707, CWE-400

Severity

VersionScoreVectorSource
CVSS 3.1 low 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L security-advisories@github.comSecondary
CVSS 3.1 high 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H nvd@nist.govPrimary
CVSS 2.0 medium 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P nvd@nist.govPrimary

Affected products

Vendor and product from the NVD’s CPE applicability statements. Versions and conditions are on the NVD’s page.

References