Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Mozilla Firefox ESR
unspecified to < 60.3affected
Mozilla Firefox
unspecified to < 63affected
References
- https://www.debian.org/security/2018/dsa-4324 ↗
- https://www.mozilla.org/security/advisories/mfsa2018-26/ ↗
- https://security.gentoo.org/glsa/201811-04 ↗
- https://www.mozilla.org/security/advisories/mfsa2018-27/ ↗
- https://access.redhat.com/errata/RHSA-2018:3005 ↗
- http://www.securityfocus.com/bid/105718 ↗
- https://access.redhat.com/errata/RHSA-2018:3006 ↗
- https://usn.ubuntu.com/3801-1/ ↗
- https://lists.debian.org/debian-lts-announce/2018/11/msg00008.html ↗
- http://www.securitytracker.com/id/1041944 ↗
- https://bugzilla.mozilla.org/show_bug.cgi?id=1467523 ↗