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CVE-2018-16843

Published: 6 November 2018

nginx before versions 1.15.6 and 1.14.1 has a vulnerability in the implementation of HTTP/2 that can allow for excessive memory consumption. 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.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
nginx
Launchpad, Ubuntu, Debian
upstream
Released (1.15.6)
trusty Not vulnerable
(code not present)
xenial
Released (1.10.3-0ubuntu0.16.04.3)
bionic
Released (1.14.0-0ubuntu1.2)
cosmic
Released (1.15.5-0ubuntu2.1)
Patches:
upstream: http://hg.nginx.org/nginx/rev/d4448892a294

Severity score breakdown

Parameter Value
Base score 7.5
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