1. Ubuntu Security Notices
  2. USN-2892-1

USN-2892-1: nginx vulnerabilities

Publication date

9 February 2016

Overview

Several security issues were fixed in nginx.

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)

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)

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
15.10 wily nginx-core –  1.9.3-1ubuntu1.1
nginx-extras –  1.9.3-1ubuntu1.1
nginx-full –  1.9.3-1ubuntu1.1
nginx-light –  1.9.3-1ubuntu1.1
14.04 trusty nginx-core –  1.4.6-1ubuntu3.4
nginx-extras –  1.4.6-1ubuntu3.4
nginx-full –  1.4.6-1ubuntu3.4
nginx-light –  1.4.6-1ubuntu3.4
nginx-naxsi –  1.4.6-1ubuntu3.4

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References

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