CVE-2018-18495

Source
Severity Medium
Remote Yes
Type Access restriction bypass
Description
A security issue has been found in Firefox < 64.0, where WebExtension content scripts can be loaded into about: pages in some circumstances, in violation of the permissions granted to extensions. This could allow an extension to interfere with the loading and usage of these pages and use capabilities that were intended to be restricted from extensions.
Group Package Affected Fixed Severity Status Ticket
AVG-833 firefox 63.0.3-1 64.0-1 Critical Fixed
Date Advisory Group Package Severity Description
12 Dec 2018 ASA-201812-9 AVG-833 firefox Critical multiple issues
References
https://www.mozilla.org/en-US/security/advisories/mfsa2018-29/#CVE-2018-18495
https://bugzilla.mozilla.org/show_bug.cgi?id=1427585