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CVE-2019-9513 Affecting libnghttp2 package, versions <0:1.39.2-1.amzn2

0.0
high

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 5.38% (94th percentile)
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NVD
7.5 high
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SUSE
7.5 high
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Red Hat
7.5 high

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  • Snyk ID SNYK-AMZN2-LIBNGHTTP2-1674229
  • published 27 Sep 2021
  • disclosed 13 Aug 2019
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Introduced: 13 Aug 2019

CVE-2019-9513 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2 libnghttp2 to version 0:1.39.2-1.amzn2 or higher.
This issue was patched in ALAS2-2019-1298.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libnghttp2 package and not the libnghttp2 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 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.

References