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CVE-2018-5134

Published: 14 March 2018

WebExtensions may use "view-source:" URLs to view local "file:" URL content, as well as content stored in "about:cache", bypassing restrictions that only allow WebExtensions to view specific content. This vulnerability affects Firefox < 59.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
upstream
Released (59.0)
xenial
Released (59.0+build5-0ubuntu0.16.04.1)
artful
Released (59.0+build5-0ubuntu0.17.10.1)
bionic
Released (59.0.1+build1-0ubuntu1)
trusty
Released (59.0+build5-0ubuntu0.14.04.1)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N