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


0.0
high

Snyk CVSS

    Attack Complexity Low
    Confidentiality High

    Threat Intelligence

    EPSS 1.27% (86th percentile)
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NVD
7.5 high
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SUSE
6.1 medium
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Red Hat
7.5 high

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  • Snyk ID SNYK-DEBIAN10-FIREFOXESR-354313
  • published 28 Oct 2018
  • disclosed 28 Feb 2019

How to fix?

Upgrade Debian:10 firefox-esr to version 60.3.0esr-1 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:10 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.