Vulnerability Details : CVE-2018-12395
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.
Exploit prediction scoring system (EPSS) score for CVE-2018-12395
Probability of exploitation activity in the next 30 days: 1.27%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 84 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2018-12395
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:N |
10.0
|
2.9
|
[email protected] |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
3.9
|
3.6
|
[email protected] |
References for CVE-2018-12395
-
https://access.redhat.com/errata/RHSA-2018:3005
Third Party Advisory
-
https://usn.ubuntu.com/3801-1/
Third Party Advisory
-
https://www.debian.org/security/2018/dsa-4324
Third Party Advisory
-
https://access.redhat.com/errata/RHSA-2018:3006
Third Party Advisory
-
http://www.securityfocus.com/bid/105718
VDB Entry;Third Party 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://www.mozilla.org/security/advisories/mfsa2018-27/
Vendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2018-26/
Vendor Advisory
-
http://www.securitytracker.com/id/1041944
VDB Entry;Third Party Advisory
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1467523
Issue Tracking;Permissions Required;Vendor Advisory
Products affected by CVE-2018-12395
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*