CVE-2017-8288

moderate-risk

Published 2017-04-27

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.

Do I need to act?

0.40% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 8.1/10 High

NETWORK / HIGH complexity

Affected Products (12)

Gnome-Shell

Affected Vendors

Gnome

References (10)

Third Party Advisory http://www.securityfocus.com/bid/98070

Issue Tracking https://bugs.kali.org/view.php?id=2513

Issue Tracking https://bugzilla.gnome.org/show_bug.cgi?id=781728

Third Party Advisory https://github.com/EasyScreenCast/EasyScreenCast/issues/46

Issue Tracking https://github.com/GNOME/gnome-shell/commit/ff425d1db7082e2755d2a405af53861552ac...

Third Party Advisory http://www.securityfocus.com/bid/98070

Issue Tracking https://bugs.kali.org/view.php?id=2513

Issue Tracking https://bugzilla.gnome.org/show_bug.cgi?id=781728

Third Party Advisory https://github.com/EasyScreenCast/EasyScreenCast/issues/46

Issue Tracking https://github.com/GNOME/gnome-shell/commit/ff425d1db7082e2755d2a405af53861552ac...

/ 100

moderate-risk

Severity 24/34 · High

Exploitability 2/34 · Minimal

Exposure 17/34 · Moderate