CVE-2018-12395
First published: Tue Oct 23 2018(Updated: )
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. External Reference: <a href="https://www.mozilla.org/en-US/security/advisories/mfsa2018-27/#CVE-2018-12395">https://www.mozilla.org/en-US/security/advisories/mfsa2018-27/#CVE-2018-12395</a>
Credit: security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Firefox | <63 | 63 |
| Firefox ESR | <60.3 | 60.3 |
| Firefox | <63.0 | |
| Firefox ESR | <60.3 | |
| Debian Linux | =8.0 | |
| Debian Linux | =9.0 | |
| Ubuntu | =14.04 | |
| Ubuntu | =16.04 | |
| Ubuntu | =18.04 | |
| Ubuntu | =18.10 | |
| Red Hat Enterprise Linux Desktop | =6.0 | |
| Red Hat Enterprise Linux Desktop | =7.0 | |
| Red Hat Enterprise Linux Server | =6.0 | |
| Red Hat Enterprise Linux Server | =7.0 | |
| Red Hat Enterprise Linux Server | =7.5 | |
| Red Hat Enterprise Linux Workstation | =6.0 | |
| Red Hat Enterprise Linux Workstation | =7.0 | |
| debian/firefox | 137.0-1 | |
| debian/firefox-esr | 115.14.0esr-1~deb11u1 128.9.0esr-1~deb11u1 128.8.0esr-1~deb12u1 128.9.0esr-1~deb12u1 128.8.0esr-1 128.9.0esr-2 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- http://www.securityfocus.com/bid/105718
- https://bugzilla.mozilla.org/show_bug.cgi?id=1467523
- https://www.mozilla.org/security/advisories/mfsa2018-26/
- https://www.mozilla.org/security/advisories/mfsa2018-27/
- https://www.debian.org/security/2018/dsa-4324
- https://security.gentoo.org/glsa/201811-04
- https://lists.debian.org/debian-lts-announce/2018/11/msg00008.html
- https://access.redhat.com/errata/RHSA-2018:3005
- https://access.redhat.com/errata/RHSA-2018:3006
- http://www.securitytracker.com/id/1041944
- https://usn.ubuntu.com/3801-1/
- https://launchpad.net/bugs/cve/CVE-2018-12395
- https://www.mozilla.org/en-US/security/advisories/mfsa2018-27/#CVE-2018-12395
- https://bugzilla.redhat.com/show_bug.cgi?id=1642185
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12395
- https://nvd.nist.gov/vuln/detail/CVE-2018-12395
- https://security-tracker.debian.org/tracker/CVE-2018-12395
- https://ubuntu.com/security/CVE-2018-12395
- https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/#CVE-2018-12395
- https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/
- https://www.mozilla.org/en-US/security/advisories/mfsa2018-27/
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is the vulnerability ID for this vulnerability?
The vulnerability ID for this vulnerability is CVE-2018-12395.
How does this vulnerability impact Firefox ESR?
This vulnerability affects Firefox ESR versions prior to 60.3.
How does this vulnerability impact Firefox?
This vulnerability affects Firefox versions prior to 63.0.
How does this vulnerability impact Debian Debian Linux?
This vulnerability affects Debian Debian Linux version 8.0 and 9.0.
How does this vulnerability impact Canonical Ubuntu Linux?
This vulnerability affects Canonical Ubuntu Linux versions 14.04, 16.04, 18.04, and 18.10.
How does this vulnerability impact Redhat Enterprise Linux Desktop?
This vulnerability affects Redhat Enterprise Linux Desktop versions 6.0 and 7.0.
How does this vulnerability impact Redhat Enterprise Linux Server?
This vulnerability affects Redhat Enterprise Linux Server versions 6.0, 7.0, and 7.5.
How does this vulnerability impact Redhat Enterprise Linux Workstation?
This vulnerability affects Redhat Enterprise Linux Workstation versions 6.0 and 7.0.
How can I fix this vulnerability?
To fix this vulnerability, upgrade to Firefox ESR 60.3 or later and Firefox 63.0 or later.
Are there any references for this vulnerability?
Yes, you can find references for this vulnerability at the following links: [Bugzilla](https://bugzilla.mozilla.org/show_bug.cgi?id=1467523), [Mozilla security advisories](https://www.mozilla.org/en-US/security/advisories/mfsa2018-27/), [CVE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12395).
What is the severity of CVE-2018-12395?
The severity of CVE-2018-12395 is high, with a severity value of 7.5.
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2018-12395
- agent/severity
- collector/mitre-cve
- source/MITRE
- collector/usn-cve
- source/Ubuntu
- agent/description
- agent/last-modified-date
- agent/trending
- agent/source
- agent/author
- collector/mozilla-advisory
- source/Mozilla
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- agent/references
- agent/event
- collector/nvd-cve
- source/NVD
- collector/nvd-index
- agent/softwarecombine
- agent/tags
- collector/security-tracker-debian
- source/Debian
- vendor/mozilla
- canonical/firefox
- canonical/firefox esr
- vendor/debian
- canonical/debian linux
- version/debian linux/8.0
- version/debian linux/9.0
- vendor/canonical
- canonical/ubuntu
- version/ubuntu/14.04
- version/ubuntu/16.04
- version/ubuntu/18.04
- version/ubuntu/18.10
- vendor/redhat
- canonical/red hat enterprise linux desktop
- version/red hat enterprise linux desktop/6.0
- version/red hat enterprise linux desktop/7.0
- canonical/red hat enterprise linux server
- version/red hat enterprise linux server/6.0
- version/red hat enterprise linux server/7.0
- version/red hat enterprise linux server/7.5
- canonical/red hat enterprise linux workstation
- version/red hat enterprise linux workstation/6.0
- version/red hat enterprise linux workstation/7.0
- package-manager/debian