CVE-2020-6808 Information

Description

When a JavaScript URL (javascript:) is evaluated and the result is a string this string is parsed to create an HTML document which is then presented. Previously this document’s URL (as reported by the document.location property for example) was the originating javascript: URL which could lead to spoofing attacks; it is now correctly the URL of the originating document. This vulnerability affects Firefox 74.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Reference

https://bugzilla.mozilla.org/show_bug.cgi?id=1247968 https://www.mozilla.org/security/advisories/mfsa2020-08/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

6.5