CVE-2016-0747

Publication date 26 January 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

The resolver in nginx before 1.8.1 and 1.9.x before 1.9.10 does not properly limit CNAME resolution, which allows remote attackers to cause a denial of service (worker process resource consumption) via vectors related to arbitrary name resolution.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
nginx	17.04 zesty	Fixed 1.9.10-0ubuntu1
	16.10 yakkety	Fixed 1.9.10-0ubuntu1
	16.04 LTS xenial	Fixed 1.9.10-0ubuntu1
	15.10 wily	Fixed 1.9.3-1ubuntu1.1
	15.04 vivid	Ignored end of life
	14.04 LTS trusty	Fixed 1.4.6-1ubuntu3.4
	12.04 LTS precise	Ignored end of life

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
nginx	Upstream: fe89d99 Upstream: 4016e6b

Severity score breakdown

Parameter	Value
Base score	5.3 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	Low
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References

Related Ubuntu Security Notices (USN)

USN-2892-1
nginx vulnerabilities
9 February 2016