CVE-2018-16844

Publication date 6 November 2018

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

nginx before versions 1.15.6 and 1.14.1 has a vulnerability in the implementation of HTTP/2 that can allow for excessive CPU usage. This issue affects nginx compiled with the ngx_http_v2_module (not compiled by default) if the 'http2' option of the 'listen' directive is used in a configuration file.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
nginx	18.10 cosmic	Fixed 1.15.5-0ubuntu2.1
	18.04 LTS bionic	Fixed 1.14.0-0ubuntu1.2
	16.04 LTS xenial	Fixed 1.10.3-0ubuntu0.16.04.3
	14.04 LTS trusty	Not affected

Patch details

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

Package	Patch details
nginx	Upstream: http://hg.nginx.org/nginx/rev/e7f19d268c72

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-3812-1
nginx vulnerabilities
7 November 2018