CVE-2018-12395
critical
CVSS v3
—
CVSS v2
—
VIR risk
9.5
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-12395
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2018-12395.html
Vendor advisory: arch — https://security.archlinux.org/ASA-201810-14
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 63.0-1 | |
| sles | affected | | |
| debian | sid | fixed | 63.0-1 |
| debian | bookworm | fixed | 60.3.0esr-1 |
| debian | bullseye | fixed | 60.3.0esr-1 |
| debian | forky | fixed | 60.3.0esr-1 |
| debian | trixie | fixed | 60.3.0esr-1 |
References
Verify integrity in audit chain (admin only). AS-IS.