CVE-2018-12395

high
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

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.

References

http://www.securityfocus.com/bid/105718

http://www.securitytracker.com/id/1041944

https://access.redhat.com/errata/RHSA-2018:3005

https://access.redhat.com/errata/RHSA-2018:3006

https://bugzilla.mozilla.org/show_bug.cgi?id=1467523

https://lists.debian.org/debian-lts-announce/2018/11/msg00008.html

https://security.gentoo.org/glsa/201811-04

https://usn.ubuntu.com/3801-1/

https://www.debian.org/security/2018/dsa-4324

https://www.mozilla.org/security/advisories/mfsa2018-26/

https://www.mozilla.org/security/advisories/mfsa2018-27/

Details

Source: MITRE

Published: 2019-02-28

Updated: 2019-10-03

Risk Information

CVSS v2

Base Score: 5

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

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*

Configuration 2

OR

cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Configuration 3

OR

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:*:*:*:*:*:*:*

Configuration 4

OR

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_server_eus:7.5:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*

Tenable Plugins

View all (28 total)

IDNameProductFamilySeverity
127404NewStart CGSL MAIN 4.05 : firefox Multiple Vulnerabilities (NS-SA-2019-0141)NessusNewStart CGSL Local Security Checks
critical
127198NewStart CGSL CORE 5.04 / MAIN 5.04 : firefox Multiple Vulnerabilities (NS-SA-2019-0032)NessusNewStart CGSL Local Security Checks
critical
123356openSUSE Security Update : Mozilla Firefox (openSUSE-2019-855)NessusSuSE Local Security Checks
critical
700410Mozilla Firefox < 63 Multiple VulnerabilitiesNessus Network MonitorWeb Clients
high
120158SUSE SLED15 / SLES15 Security Update : MozillaFirefox (SUSE-SU-2018:3656-1)NessusSuSE Local Security Checks
critical
119903EulerOS 2.0 SP2 : firefox (EulerOS-SA-2018-1414)NessusHuawei Local Security Checks
critical
119564EulerOS 2.0 SP3 : firefox (EulerOS-SA-2018-1384)NessusHuawei Local Security Checks
critical
119553SUSE SLED12 / SLES12 Security Update : MozillaFirefox (SUSE-SU-2018:3749-2)NessusSuSE Local Security Checks
critical
119146Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : Firefox regressions (USN-3801-2)NessusUbuntu Local Security Checks
critical
118953SUSE SLED12 / SLES12 Security Update : MozillaFirefox (SUSE-SU-2018:3749-1)NessusSuSE Local Security Checks
critical
118848GLSA-201811-04 : Mozilla Firefox: Multiple vulnerabilitiesNessusGentoo Local Security Checks
critical
118808Debian DLA-1571-1 : firefox-esr security updateNessusDebian Local Security Checks
critical
118709Oracle Linux 6 : firefox (ELSA-2018-3006)NessusOracle Linux Local Security Checks
critical
118444openSUSE Security Update : Mozilla Firefox (openSUSE-2018-1268)NessusSuSE Local Security Checks
critical
118443Scientific Linux Security Update : firefox on SL7.x x86_64 (20181025)NessusScientific Linux Local Security Checks
critical
118442Scientific Linux Security Update : firefox on SL6.x i386/x86_64 (20181025)NessusScientific Linux Local Security Checks
critical
118406CentOS 6 : firefox (CESA-2018:3006)NessusCentOS Local Security Checks
critical
118405CentOS 7 : firefox (CESA-2018:3005)NessusCentOS Local Security Checks
critical
118397Mozilla Firefox < 63 Multiple VulnerabilitiesNessusWindows
high
118396Mozilla Firefox < 63 Multiple Vulnerabilities (macOS)NessusMacOS X Local Security Checks
high
118395Mozilla Firefox ESR < 60.3 Multiple VulnerabilitiesNessusWindows
high
118394Mozilla Firefox ESR < 60.3 Multiple Vulnerabilities (macOS)NessusMacOS X Local Security Checks
high
118393Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : Firefox vulnerabilities (USN-3801-1)NessusUbuntu Local Security Checks
critical
118375RHEL 6 : firefox (RHSA-2018:3006)NessusRed Hat Local Security Checks
critical
118374RHEL 7 : firefox (RHSA-2018:3005)NessusRed Hat Local Security Checks
critical
118368Oracle Linux 7 : firefox (ELSA-2018-3005)NessusOracle Linux Local Security Checks
critical
118365Debian DSA-4324-1 : firefox-esr - security updateNessusDebian Local Security Checks
critical
118336FreeBSD : mozilla -- multiple vulnerabilities (7c3a02b9-3273-4426-a0ba-f90fad2ff72e)NessusFreeBSD Local Security Checks
critical