Advisory Published

USN-4099-1: nginx vulnerabilities

First published: Thu Aug 15 2019(Updated: )

Jonathan Looney discovered that nginx incorrectly handled the HTTP/2 implementation. A remote attacker could possibly use this issue to consume resources, leading to a denial of service.

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/nginx-common<1.15.9-0ubuntu1.1
1.15.9-0ubuntu1.1
Ubuntu OpenSSH Client=19.04
All of
ubuntu/nginx-core<1.15.9-0ubuntu1.1
1.15.9-0ubuntu1.1
Ubuntu OpenSSH Client=19.04
All of
ubuntu/nginx-extras<1.15.9-0ubuntu1.1
1.15.9-0ubuntu1.1
Ubuntu OpenSSH Client=19.04
All of
ubuntu/nginx-full<1.15.9-0ubuntu1.1
1.15.9-0ubuntu1.1
Ubuntu OpenSSH Client=19.04
All of
ubuntu/nginx-light<1.15.9-0ubuntu1.1
1.15.9-0ubuntu1.1
Ubuntu OpenSSH Client=19.04
All of
ubuntu/nginx-common<1.14.0-0ubuntu1.4
1.14.0-0ubuntu1.4
Ubuntu OpenSSH Client=18.04
All of
ubuntu/nginx-core<1.14.0-0ubuntu1.4
1.14.0-0ubuntu1.4
Ubuntu OpenSSH Client=18.04
All of
ubuntu/nginx-extras<1.14.0-0ubuntu1.4
1.14.0-0ubuntu1.4
Ubuntu OpenSSH Client=18.04
All of
ubuntu/nginx-full<1.14.0-0ubuntu1.4
1.14.0-0ubuntu1.4
Ubuntu OpenSSH Client=18.04
All of
ubuntu/nginx-light<1.14.0-0ubuntu1.4
1.14.0-0ubuntu1.4
Ubuntu OpenSSH Client=18.04
All of
ubuntu/nginx-common<1.10.3-0ubuntu0.16.04.4
1.10.3-0ubuntu0.16.04.4
Ubuntu OpenSSH Client=16.04
All of
ubuntu/nginx-core<1.10.3-0ubuntu0.16.04.4
1.10.3-0ubuntu0.16.04.4
Ubuntu OpenSSH Client=16.04
All of
ubuntu/nginx-extras<1.10.3-0ubuntu0.16.04.4
1.10.3-0ubuntu0.16.04.4
Ubuntu OpenSSH Client=16.04
All of
ubuntu/nginx-full<1.10.3-0ubuntu0.16.04.4
1.10.3-0ubuntu0.16.04.4
Ubuntu OpenSSH Client=16.04
All of
ubuntu/nginx-light<1.10.3-0ubuntu0.16.04.4
1.10.3-0ubuntu0.16.04.4
Ubuntu OpenSSH Client=16.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this nginx vulnerability?

    The vulnerability ID for this nginx vulnerability is CVE-2019-9511.

  • What is the severity of CVE-2019-9511?

    The severity of CVE-2019-9511 is high.

  • How does the vulnerability in nginx affect the system?

    The vulnerability in nginx could allow a remote attacker to consume resources, leading to a denial of service.

  • Which versions of nginx on Ubuntu are affected by this vulnerability?

    Versions 1.15.9-0ubuntu1.1, 1.14.0-0ubuntu1.4, and 1.10.3-0ubuntu0.16.04.4 of nginx on Ubuntu are affected.

  • How can I fix the CVE-2019-9511 vulnerability in nginx?

    To fix the CVE-2019-9511 vulnerability in nginx, you should upgrade to version 1.15.9-0ubuntu1.1, 1.14.0-0ubuntu1.4, or 1.10.3-0ubuntu0.16.04.4 depending on the Ubuntu version you are using.

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