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CVE-2018-12369

Published: 27 June 2018

WebExtensions bundled with embedded experiments were not correctly checked for proper authorization. This allowed a malicious WebExtension to gain full browser permissions. This vulnerability affects Firefox ESR < 60.1 and Firefox < 61.

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
upstream
Released (61.0)
xenial
Released (61.0+build3-0ubuntu0.16.04.2)
artful
Released (61.0+build3-0ubuntu0.17.10.1)
bionic
Released (61.0+build3-0ubuntu0.18.04.1)
trusty
Released (61.0+build3-0ubuntu0.14.04.2)

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H