Bug 1669391 (CVE-2019-3820) - CVE-2019-3820 gnome-shell: partial lock screen bypass
Summary: CVE-2019-3820 gnome-shell: partial lock screen bypass
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-3820
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1669393 1672814 1672815 1698520
Blocks: 1669389
TreeView+ depends on / blocked
 
Reported: 2019-01-25 05:52 UTC by Doran Moppert
Modified: 2021-02-16 22:28 UTC (History)
5 users (show)

Fixed In Version: gnome-shell 3.31.5, gnome-shell 3.30.3
Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found where the gnome-shell lock screen, since version 3.15.91, does not properly restrict all contextual actions. An attacker with physical access to a locked workstation could invoke certain keyboard shortcuts and potentially other actions. This vulnerability was fixed in gnome-shell 3.31.5 and 3.30.3.
Clone Of:
Environment:
Last Closed: 2020-03-31 22:33:33 UTC


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:1021 0 None None None 2020-03-31 19:12:22 UTC

Description Doran Moppert 2019-01-25 05:52:45 UTC
It was discovered that the gnome-shell lock screen since version 3.15.91 did not properly restrict all contextual actions.  An attacker with physical access to a locked workstation could invoke certain keyboard shortcuts, and potentially other actions.

This issue was introduced with the following ticket & commit:

https://bugzilla.gnome.org/show_bug.cgi?id=745039
https://gitlab.gnome.org/GNOME/gnome-shell/commit/c79d24b60e773262091023feb6ee1b3deef1c471

Upstream issue:

https://gitlab.gnome.org/GNOME/gnome-shell/issues/851

Comment 4 Doran Moppert 2019-02-06 00:49:51 UTC
External References:

https://gitlab.gnome.org/GNOME/gnome-shell/issues/851

Comment 5 Doran Moppert 2019-02-06 00:50:27 UTC
Created gnome-shell tracking bugs for this issue:

Affects: fedora-all [bug 1672815]

Comment 7 Doran Moppert 2019-02-15 00:30:27 UTC
Acknowledgments:

Name: Ray Strode (The GNOME Project)
Upstream: Maxime Vellard

Comment 8 errata-xmlrpc 2020-03-31 19:12:20 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:1021 https://access.redhat.com/errata/RHSA-2020:1021

Comment 9 Product Security DevOps Team 2020-03-31 22:33:33 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-3820


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