Home/CVE/By rewriting the Host: request headers using the webRequest API, a WebExtension can bypass domain restrictions through d
CVE

CVE-2018-12395

By rewriting the Host: request headers using the webRequest API, a WebExtension can bypass domain restrictions through d

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.

HIGH · CVSS 7.5 EPSS 0.01823
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules1 YARA rules0
▤

Affected Products & Versions

8
mozilla firefox< 63.0
mozilla firefox esr< 60.3
debian linuxall versions
canonical ubuntu linuxall versions
redhat enterprise linux desktopall versions
redhat enterprise linux serverall versions
redhat enterprise linux server eusall versions
redhat enterprise linux workstationall versions
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSQLite Firefox Profile Data DB Access
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.0 · security@mozilla.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD28 Feb 2019 · 06:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
⚑

Vendor Advisories

10
suse-csafopenSUSE-SU-2024:14572-1
suse-csafopenSUSE-SU-2024:10600-1
suse-csafSUSE-SU-2018:3749-3
suse-csafSUSE-SU-2018:3749-2
suse-csafSUSE-SU-2018:3749-1
🔗

References & Sources

9
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.securityfocus.com/bid/105718Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1041944Third Party AdvisoryVDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1467523Issue TrackingPermissions RequiredVendor Advisory
https://lists.debian.org/debian-lts-announce/2018/11/msg00008.htmlMailing ListThird Party Advisory
https://security.gentoo.org/glsa/201811-04Third Party Advisory
https://usn.ubuntu.com/3801-1/Third Party Advisory
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