PT-2018-3167 · Mozilla+5 · Firefox+5

Andrew Swan + 1 · Published 2018-10-23 · Updated 2024-12-12 · CVE-2018-12395

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Firefox ESR versions prior to 60.3 Firefox versions prior to 63

Description The issue is related to a lack of access control in the WebExtensions system for Firefox browsers. It allows a WebExtension to bypass domain restrictions through domain fronting by rewriting the Host: request headers using the webRequest API. This could enable access to restricted domains that share a host.

Recommendations For Firefox ESR versions prior to 60.3, update to version 60.3 or later. For Firefox versions prior to 63, update to version 63 or later.

Fix

Improper Access Control

Weakness Enumeration

CWE-284

Related Identifiers

ALT-PU-2018-2550

ALT-PU-2018-2645

ALT-PU-2019-2324

ALT-PU-2019-2486

BDU:2019-04298

CESA-2018_3005

CESA-2018_3006

CVE-2018-12395

DLA-1571-1

DSA-4324-1

MGASA-2018-0420

OPENSUSE-SU-2018_3435-1

OPENSUSE-SU-2024:10600-1

OPENSUSE-SU-2024:14572-1

RHSA-2018:3005

RHSA-2018:3006

RHSA-2018_3005

RHSA-2018_3006

SUSE-SU-2018:3656-1

SUSE-SU-2018:3749-1

SUSE-SU-2018:3749-2

SUSE-SU-2018:3749-3

USN-3801-1

USN-3801-2

Affected Products

Alt Linux

Centos

Firefox

Red Hat

Suse

Ubuntu

References · 1921

• https://ubuntu.com/security/CVE-2018-12392 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:14572-1 · Vendor Advisory
• https://mozilla.org/en-US/security/advisories/mfsa2018-26 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-12390 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:3749-2 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-12395 · Security Note
• https://wiki.astralinux.ru/astra-linux-se81-bulletin-20230315SE81 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-04298 · Security Note
• https://mozilla.org/en-US/security/known-vulnerabilities/firefox-esr · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-12397 · Vendor Advisory
• https://mozilla.org/security/advisories/mfsa2018-26 · Vendor Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1467523 · Vendor Advisory
• https://wiki.astralinux.ru/pages/viewpage.action?pageId=44892734 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-12395 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-12399 · Vendor Advisory