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CVE-2019-9513 Affecting nghttp2 package, versions <1.30.0-1ubuntu1+esm2

Severity

 Recommended
medium

Based on Ubuntu security rating

    Threat Intelligence

    EPSS
    4.29% (93rd percentile)

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  • Snyk ID SNYK-UBUNTU1804-NGHTTP2-459190
  • published 13 Aug 2019
  • 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 Ubuntu:18.04 nghttp2 to version 1.30.0-1ubuntu1+esm2 or higher.

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.

References

CVSS Scores

version 3.1
Expand this section

NVD

7.5 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High