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CVE-2018-12395 Affecting firefox-esr package, versions <60.3.0esr-1~deb8u1

Severity

 Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.74% (82nd percentile)

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  • Snyk IDSNYK-DEBIAN8-FIREFOXESR-354311
  • published28 Oct 2018
  • disclosed28 Feb 2019
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Introduced: 28 Oct 2018

CVE-2018-12395  (opens in a new tab)

How to fix?

Upgrade Debian:8 firefox-esr to version 60.3.0esr-1~deb8u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox-esr package and not the firefox-esr package as distributed by Debian. See How to fix? for Debian:8 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.