Denial of service in nghttp2(CVE-2020-11080)

概要

Denial of service in nghttp2

原文の説明

取得元が公開している説明をそのまま載せています (多くは英語)。

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.

出典: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV

影響パッケージ

Bitnami node-min

[{"type":"SEMVER","events":[{"introduced":"10.0.0"},{"fixed":"10.12.1"},{"introduced":"10.13.0"},{"fixed":"10.21.0"},{"introduced":"12.0.0"},{"fixed":"12.12.1"},{"introduced":"12.13.0"},{"fixed":"12.18.0"},{"introduced":"14.0.0"},{"fixed":"14.4.1"}]}]

Bitnami node

[{"type":"SEMVER","events":[{"introduced":"10.13.0"},{"fixed":"10.21.0"},{"introduced":"12.13.0"},{"fixed":"12.18.0"},{"introduced":"14.0.0"},{"fixed":"14.4.1"}]}]

ディストリビューション別の修正状況

各ディストリビューションが公開している、この CVE の修正パッケージ

Alpine Linux ALPINE-CVE-2020-11080 nghttp2 修正版: 1.39.2-r1
Debian DEBIAN-CVE-2020-11080 nghttp2 修正版: 1.41.0-1

参照URL

advisory lists.opensuse.org
advisory github.com
advisory github.com
advisory github.com
advisory lists.debian.org
advisory debian.org
advisory oracle.com
advisory oracle.com
advisory oracle.com
advisory oracle.com
advisory oracle.com
web lists.debian.org
web lists.fedoraproject.org
web lists.fedoraproject.org
web nvd.nist.gov