CVE-2016-0746

Publication date 26 January 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Use-after-free vulnerability in the resolver in nginx 0.6.18 through 1.8.0 and 1.9.x before 1.9.10 allows remote attackers to cause a denial of service (worker process crash) or possibly have unspecified other impact via a crafted DNS response related to CNAME response processing.

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: a3d4225 Upstream: 4b581a7 Upstream: b1a110e

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-2892-1
nginx vulnerabilities
9 February 2016