CVE-2018-12395 Affecting firefox package, versions <63.0+build1-0ubuntu1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published28 Oct 2018
- disclosed28 Feb 2019
Introduced: 28 Oct 2018
CVE-2018-12395 (opens in a new tab)How to fix?
Upgrade Ubuntu:21.04 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:21.04 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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-12395
- https://www.debian.org/security/2018/dsa-4324
- https://lists.debian.org/debian-lts-announce/2018/11/msg00008.html
- https://security-tracker.debian.org/tracker/CVE-2018-12395
- https://security.gentoo.org/glsa/201811-04
- https://www.mozilla.org/security/advisories/mfsa2018-26/
- https://www.mozilla.org/security/advisories/mfsa2018-27/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1467523
- https://access.redhat.com/errata/RHSA-2018:3005
- https://access.redhat.com/errata/RHSA-2018:3006
- http://www.securityfocus.com/bid/105718
- http://www.securitytracker.com/id/1041944
- https://usn.ubuntu.com/3801-1/