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Ubuntu 4099-1: Critical NGINX DoS Due To Malicious Network Traffic

ubuntu
Calendar Grey August 15, 2019
Dist Ubuntu Esm H88
Ubuntu Security Notice USN-4100-1 tackles vulnerabilities in PostgreSQL causing potential data breaches for releases 20.04 LTS and 18.04 LTS.
nginx could be made to crash if it received specially crafted network traffic.

Summary

nginx could be made to crash if it received specially crafted network

traffic.

Software Description:

- nginx: small, powerful, scalable web/proxy server

Details:

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.

Topics%20covered

Topics Covered

security advisory denial of service network traffic ubuntu nginx

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 19.04:
  nginx-common                    1.15.9-0ubuntu1.1
  nginx-core                      1.15.9-0ubuntu1.1
  nginx-extras                    1.15.9-0ubuntu1.1
  nginx-full                      1.15.9-0ubuntu1.1
  nginx-light                     1.15.9-0ubuntu1.1

Ubuntu 18.04 LTS:
  nginx-common                    1.14.0-0ubuntu1.4
  nginx-core                      1.14.0-0ubuntu1.4
  nginx-extras                    1.14.0-0ubuntu1.4
  nginx-full                      1.14.0-0ubuntu1.4
  nginx-light                     1.14.0-0ubuntu1.4

Ubuntu 16.04 LTS:
  nginx-common                    1.10.3-0ubuntu0.16.04.4
  nginx-core                      1.10.3-0ubuntu0.16.04.4
  nginx-extras                    1.10.3-0ubuntu0.16.04.4
  nginx-full                      1.10.3-0ubuntu0.16.04.4
  nginx-light                     1.10.3-0ubuntu0.16.04.4

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-4099-1

CVE-2019-9511, CVE-2019-9513, CVE-2019-9516

Severity
critical
Lowest
Low
Medium
High
Critical

August 15, 2019

Topics%20covered

Topics Covered

security advisory denial of service network traffic ubuntu nginx

Package Information

https://launchpad.net/ubuntu/+source/nginx/1.15.9-0ubuntu1.1
https://launchpad.net/ubuntu/+source/nginx/1.14.0-0ubuntu1.4
https://launchpad.net/ubuntu/+source/nginx/1.10.3-0ubuntu0.16.04.4

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