CVE-2017-8288 Information

Description

gnome-shell 3.22 through 3.24.1 mishandles extensions that fail to reload which can lead to leaving extensions enabled in the lock screen. With these extensions a bystander could launch applications (but not interact with them) see information from the extensions (e.g. what applications you have opened or what music you were playing) or even execute arbitrary commands. It all depends on what extensions a user has enabled. The problem is caused by lack of exception handling in js/ui/extensionSystem.js.

CVSS Vector

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

Reference

http://www.securityfocus.com/bid/98070 https://bugs.kali.org/view.php?id=2513 https://bugzilla.gnome.org/show_bug.cgi?id=781728 https://github.com/EasyScreenCast/EasyScreenCast/issues/46 https://github.com/GNOME/gnome-shell/commit/ff425d1db7082e2755d2a405af53861552acf2a1

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.1