NetSight
IP …
low3.7

CVE-2020-11080

In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service.

Impact

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.

Affected products

VendorProductAffected versions
Nghttp2Nghttp2
before 1.41.0
DebianDebian Linux
Versions 9.0, 10.0
OpensuseLeap
Version 15.1
FedoraprojectFedora
Versions 31, 33
OracleBanking Extensibility Workbench
Versions 14.3.0, 14.4.0
OracleBlockchain Platform
before 21.1.2
OracleEnterprise Communications Broker
Versions 3.1.0, 3.2.0
OracleGraalvm
Versions 19.3.2, 20.1.0
OracleMysql
from 7.3.0 through 7.3.30
from 7.4.0 through 7.4.29
from 7.5.0 through 7.5.19
from 7.6.0 through 7.6.15
from 8.0.0 through 8.0.21
NodejsNode.Js
from 10.0.0 through 10.12.0
from 10.13.0 before 10.21.0
from 12.0.0 through 12.12.0
from 12.13.0 before 12.18.0
from 14.0.0 through 14.4.0

Weakness classification

CWE-707CWE-400

References