CVE-2019-9513 Affecting nghttp2 package, versions *



    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 5.7% (94th percentile)
Expand this section
7.5 high
Expand this section
7.5 high
Expand this section
Red Hat
7.5 high

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  • Snyk ID SNYK-UBUNTU1804-NGHTTP2-459190
  • published 13 Aug 2019
  • disclosed 13 Aug 2019

How to fix?

There is no fixed version for Ubuntu:18.04 nghttp2.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nghttp2 package and not the nghttp2 package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service. The attacker creates multiple request streams and continually shuffles the priority of the streams in a way that causes substantial churn to the priority tree. This can consume excess CPU.