Improper Input Validation The advisory has been revoked - it doesn't affect any version of package gnome-shell (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU2010-GNOMESHELL-1033090
- published27 Apr 2017
- disclosed27 Apr 2017
Introduced: 27 Apr 2017
CVE-2017-8288 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:20.10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream gnome-shell package and not the gnome-shell package as distributed by Ubuntu.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-8288
- https://security-tracker.debian.org/tracker/CVE-2017-8288
- https://github.com/GNOME/gnome-shell/commit/ff425d1db7082e2755d2a405af53861552acf2a1
- https://github.com/EasyScreenCast/EasyScreenCast/issues/46
- https://bugs.kali.org/view.php?id=2513
- https://bugzilla.gnome.org/show_bug.cgi?id=781728
- http://www.securityfocus.com/bid/98070