CVE-2018-5118 Information

Description

The screenshot images displayed in the Activity Stream page displayed when a new tab is opened is created from the meta tags of websites. An issue was discovered where the page could attempt to create these images through \file:\ URLs from the local file system. This loading is blocked by the sandbox but could expose local data if combined with another attack that escapes sandbox protections. This vulnerability affects Firefox 58.

CVSS Vector

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

Reference

http://www.securityfocus.com/bid/102786 http://www.securitytracker.com/id/1040270 https://bugzilla.mozilla.org/show_bug.cgi?id=1420049 https://usn.ubuntu.com/3544-1/ https://www.mozilla.org/security/advisories/mfsa2018-02/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

5.3