Homepage

CVE-2018-12395 Affecting firefox package, versions <63.0+build1-0ubuntu1

Severity

 Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.74% (82nd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-UBUNTU2004-FIREFOX-582992
  • published28 Oct 2018
  • disclosed28 Feb 2019
Report a new vulnerability Found a mistake?

Introduced: 28 Oct 2018

CVE-2018-12395  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade Ubuntu:20.04 firefox to version 63.0+build1-0ubuntu1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

By rewriting the Host: request headers using the webRequest API, a WebExtension can bypass domain restrictions through domain fronting. This would allow access to domains that share a host that are otherwise restricted. This vulnerability affects Firefox ESR < 60.3 and Firefox < 63.