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USN-2892-1: nginx vulnerabilities

9 February 2016

Several security issues were fixed in nginx.

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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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Releases

Packages

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

Details

It was discovered that nginx incorrectly handled certain DNS server
responses when the resolver is enabled. A remote attacker could possibly
use this issue to cause nginx to crash, resulting in a denial of service.
(CVE-2016-0742)

It was discovered that nginx incorrectly handled CNAME response processing
when the resolver is enabled. A remote attacker could use this issue to
cause nginx to crash, resulting in a denial of service, or possibly execute
arbitrary code. (CVE-2016-0746)

It was discovered that nginx incorrectly handled CNAME resolution when
the resolver is enabled. A remote attacker could possibly use this issue to
cause nginx to consume resources, resulting in a denial of service.
(CVE-2016-0747)

Reduce your security exposure

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.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 15.10
Ubuntu 14.04

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