CVE-2017-8288

Severity: high (CVSS 8.1 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-04-27 · updated 2026-06-17
Weakness: CWE-20

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.

Affected products

gnome-shell: 3.22.0, 3.22.1, 3.22.2, 3.22.3, 3.23.1, 3.23.2 (+6)

References

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
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

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