CVE-2018-18495 Information

Description

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. This vulnerability affects Firefox 64.

CVSS Vector

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

Reference

http://www.securityfocus.com/bid/106167 https://bugzilla.mozilla.org/show_bug.cgi?id=1427585 https://usn.ubuntu.com/3844-1/ https://www.mozilla.org/security/advisories/mfsa2018-29/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

6.5