USN-4967-2: nginx vulnerability

27 May 2021

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

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Releases

Packages

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

Details

USN-4967-1 fixed a vulnerability in nginx. This update provides
the corresponding update for Ubuntu 14.04 ESM and 16.04 ESM.

Original advisory details:

Luis Merino, Markus Vervier, and Eric Sesterhenn discovered that nginx
incorrectly handled responses to the DNS resolver. A remote attacker could
use this issue to cause nginx to crash, resulting in a denial of service,
or possibly execute arbitrary code.

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Update instructions

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

Ubuntu 16.04
Ubuntu 14.04

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

References

Related notices

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