USN-3812-1: nginx vulnerabilities

nginx vulnerabilities

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

Ubuntu 18.10
Ubuntu 18.04 LTS
Ubuntu 16.04 LTS
Ubuntu 14.04 LTS

Summary

Several security issues were fixed in nginx.

Software Description

nginx – small, powerful, scalable web/proxy server

Details

It was discovered that nginx incorrectly handled the HTTP/2 implementation.
A remote attacker could possibly use this issue to cause excessive memory
consumption, leading to a denial of service. This issue only affected
Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-16843)

Gal Goldshtein discovered that nginx incorrectly handled the HTTP/2
implementation. A remote attacker could possibly use this issue to cause
excessive CPU usage, leading to a denial of service. This issue only
affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 18.10.
(CVE-2018-16844)

It was discovered that nginx incorrectly handled the ngx_http_mp4_module
module. A remote attacker could possibly use this issue with a specially
crafted mp4 file to cause nginx to crash, stop responding, or access
arbitrary memory. (CVE-2018-16845)

Update instructions

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

Ubuntu 18.10: nginx-common – 1.15.5-0ubuntu2.1; nginx-core – 1.15.5-0ubuntu2.1; nginx-extras – 1.15.5-0ubuntu2.1; nginx-full – 1.15.5-0ubuntu2.1; nginx-light – 1.15.5-0ubuntu2.1
Ubuntu 18.04 LTS: nginx-common – 1.14.0-0ubuntu1.2; nginx-core – 1.14.0-0ubuntu1.2; nginx-extras – 1.14.0-0ubuntu1.2; nginx-full – 1.14.0-0ubuntu1.2; nginx-light – 1.14.0-0ubuntu1.2
Ubuntu 16.04 LTS: nginx-common – 1.10.3-0ubuntu0.16.04.3; nginx-core – 1.10.3-0ubuntu0.16.04.3; nginx-extras – 1.10.3-0ubuntu0.16.04.3; nginx-full – 1.10.3-0ubuntu0.16.04.3; nginx-light – 1.10.3-0ubuntu0.16.04.3
Ubuntu 14.04 LTS: nginx-common – 1.4.6-1ubuntu3.9; nginx-core – 1.4.6-1ubuntu3.9; nginx-extras – 1.4.6-1ubuntu3.9; nginx-full – 1.4.6-1ubuntu3.9; nginx-light – 1.4.6-1ubuntu3.9

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

Source: USN-3812-1: nginx vulnerabilities

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