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.
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:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-12395
0.97%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 84 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-12395
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:N |
10.0
|
2.9
|
NIST | |
|
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
|
NIST |
References for CVE-2018-12395
-
https://access.redhat.com/errata/RHSA-2018:3005
RHSA-2018:3005 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://usn.ubuntu.com/3801-1/
USN-3801-1: Firefox vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://www.debian.org/security/2018/dsa-4324
Debian -- Security Information -- DSA-4324-1 firefox-esrThird Party Advisory
-
https://access.redhat.com/errata/RHSA-2018:3006
RHSA-2018:3006 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
http://www.securityfocus.com/bid/105718
Mozilla Firefox and Firefox ESR Multiple Security VulnerabilitiesVDB Entry;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2018/11/msg00008.html
[SECURITY] [DLA 1571-1] firefox-esr security updateMailing List;Third Party Advisory
-
https://security.gentoo.org/glsa/201811-04
Mozilla Firefox: Multiple vulnerabilities (GLSA 201811-04) — Gentoo securityThird Party Advisory
-
https://www.mozilla.org/security/advisories/mfsa2018-27/
Security vulnerabilities fixed in Firefox ESR 60.3 — MozillaVendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2018-26/
Security vulnerabilities fixed in Firefox 63 — MozillaVendor Advisory
-
http://www.securitytracker.com/id/1041944
Mozilla Firefox Multiple Bugs Let Remote Users Deny Service, Obtain Potentially Sensitive Information, and Execute Arbitrary Code - SecurityTrackerVDB Entry;Third Party Advisory
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1467523
Access DeniedIssue Tracking;Permissions Required;Vendor Advisory
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