USN-4967-2: nginx vulnerability

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.

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.

Update instructions

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

Learn more about how to get the fixes.

Ubuntu Release	Package Version
16.04 xenial	nginx – 1.10.3-0ubuntu0.16.04.5+esm1
	nginx-common – 1.10.3-0ubuntu0.16.04.5+esm1
	nginx-core – 1.10.3-0ubuntu0.16.04.5+esm1
	nginx-extras – 1.10.3-0ubuntu0.16.04.5+esm1
	nginx-full – 1.10.3-0ubuntu0.16.04.5+esm1
	nginx-light – 1.10.3-0ubuntu0.16.04.5+esm1
14.04 trusty	nginx – 1.4.6-1ubuntu3.9+esm2
	nginx-common – 1.4.6-1ubuntu3.9+esm2
	nginx-core – 1.4.6-1ubuntu3.9+esm2
	nginx-extras – 1.4.6-1ubuntu3.9+esm2
	nginx-full – 1.4.6-1ubuntu3.9+esm2
	nginx-light – 1.4.6-1ubuntu3.9+esm2

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References

CVE-2021-23017

CVE-2021-23017

USN-4967-1

USN-4967-1

Packages

Details

Update instructions

Reduce your security exposure

References

Related notices