Published: 28/02/2019 Updated: 03/10/2019

CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10

CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9

VMScore: 445

Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

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.

Vulnerable Product	Search on Vulmon	Subscribe to Product
mozilla firefox
mozilla firefox esr
debian debian linux 9.0
debian debian linux 8.0
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 workstation 6.0
redhat enterprise linux server 7.0
redhat enterprise linux workstation 7.0
redhat enterprise linux desktop 7.0
redhat enterprise linux server 6.0
redhat enterprise linux server eus 7.5

Synopsis Critical: firefox security and bug fix update Type/Severity Security Advisory: Critical Topic An update for firefox is now available for Red Hat Enterprise Linux 7Red Hat Product Security has rated this update as having a security impact of Critical A Common Vulnerability Scoring System (CVSS) ba ...

Synopsis Critical: firefox security update Type/Severity Security Advisory: Critical Topic An update for firefox is now available for Red Hat Enterprise Linux 6Red Hat Product Security has rated this update as having a security impact of Critical A Common Vulnerability Scoring System (CVSS) base score, wh ...

Firefox could be made to crash or run programs as your login if it opened a malicious website ...

USN-3801-1 caused some minor regressions in Firefox ...

Multiple security issues have been found in the Mozilla Firefox web browser, which could result in the execution of arbitrary code, privilege escalation or information disclosure For the stable distribution (stretch), these problems have been fixed in version 6030esr-1~deb9u1 We recommend that you upgrade your firefox-esr packages For the deta ...

** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem When the candidate has been publicized, the details for this candidate will be provided ...

Mozilla Foundation Security Advisory 2018-27 Security vulnerabilities fixed in Firefox ESR 603 Announced October 23, 2018 Impact critical Products Firefox ESR Fixed in Firefox ESR 603 ...

Mozilla Foundation Security Advisory 2018-26 Security vulnerabilities fixed in Firefox 63 Announced October 23, 2018 Impact critical Products Firefox Fixed in Firefox 63 ...

A security issue has been found in Firefox versions prior to 630, where 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 ...

NVD-CWE-noinfo https://www.mozilla.org/security/advisories/mfsa2018-27/https://www.mozilla.org/security/advisories/mfsa2018-26/https://bugzilla.mozilla.org/show_bug.cgi?id=1467523 https://www.debian.org/security/2018/dsa-4324 https://usn.ubuntu.com/3801-1/https://security.gentoo.org/glsa/201811-04 https://lists.debian.org/debian-lts-announce/2018/11/msg00008.html https://access.redhat.com/errata/RHSA-2018:3006 https://access.redhat.com/errata/RHSA-2018:3005 http://www.securitytracker.com/id/1041944 http://www.securityfocus.com/bid/105718 https://access.redhat.com/errata/RHSA-2018:3005 https://nvd.nist.gov https://usn.ubuntu.com/3801-1/

CVE-2018-12395

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