CVE-2018-5133 Information

Description

If the \app.support.baseURL\ preference is changed by a malicious local program to contain HTML and script content this content is not sanitized. It will be executed if a user loads \chrome://browser/content/preferences/in-content/preferences.xul\ directly in a tab and executes a search. This stored preference is also executed whenever an EME video player plugin displays a CDM-disabled message as a notification message. This vulnerability affects Firefox 59.

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/103386 http://www.securitytracker.com/id/1040514 https://bugzilla.mozilla.org/show_bug.cgi?id=1430511 https://bugzilla.mozilla.org/show_bug.cgi?id=1430974 https://usn.ubuntu.com/3596-1/ https://www.mozilla.org/security/advisories/mfsa2018-06/

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