CVEvulnerability
CVE-2018-12395
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2019-02-28
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 7.5 HIGH — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N
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 configurations
• mozilla firefox (< 63.0)
• mozilla firefox esr (< 60.3)
• debian debian linux 8.0
• debian debian linux 9.0
• canonical ubuntu linux 14.04
• canonical ubuntu linux 16.04
• canonical ubuntu linux 18.04
• canonical ubuntu linux 18.10
• redhat enterprise linux desktop 6.0
• redhat enterprise linux desktop 7.0
• redhat enterprise linux server 6.0
• redhat enterprise linux server 7.0
• redhat enterprise linux server eus 7.5
• redhat enterprise linux workstation 6.0
• redhat enterprise linux workstation 7.0
References
- http://www.securityfocus.com/bid/105718 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041944 Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:3005 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3006 Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1467523 Issue Tracking, Permissions Required, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/11/msg00008.html Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201811-04 Third Party Advisory
- https://usn.ubuntu.com/3801-1/ Third Party Advisory
- https://www.debian.org/security/2018/dsa-4324 Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-26/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-27/ Vendor Advisory
- http://www.securityfocus.com/bid/105718 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041944 Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:3005 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3006 Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1467523 Issue Tracking, Permissions Required, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/11/msg00008.html Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201811-04 Third Party Advisory
- https://usn.ubuntu.com/3801-1/ Third Party Advisory
- https://www.debian.org/security/2018/dsa-4324 Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-26/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-27/ Vendor Advisory