Operating System:

[Ubuntu]

Published:

16 August 2019

Protect yourself against future threats.

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.3129
                     USN-4099-1: nginx vulnerabilities
                              16 August 2019

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           nginx
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-9516 CVE-2019-9513 CVE-2019-9511

Reference:         ESB-2019.3116

Original Bulletin: 
   https://usn.ubuntu.com/4099-1/

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USN-4099-1: nginx vulnerabilities
15 August 2019

nginx vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:

  o Ubuntu 19.04
  o Ubuntu 18.04 LTS
  o Ubuntu 16.04 LTS

Summary

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

Software Description

  o 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.

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

To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .

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

References

  o CVE-2019-9511
  o CVE-2019-9513
  o CVE-2019-9516

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