Auth bypass in GNOME Gnome-Shell
CVE-2019-3820
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.005 (40.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- GNOME Gnome-Shell
- The GNOME Project Gnome-Shell — versions since 3.15.91
- Canonical Ubuntu Linux — versions 18.04, 18.10
- openSUSE Leap — versions 15.0, 15.1, 42.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Exploit, Third Party Advisory, Issue Tracking)
- gitlab.gnome.org/GNOME/gnome-shell/issues/851 (Patch, Third Party Advisory, Issue Tracking)
- usn.ubuntu.com/3966-1/ (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-06/msg00023.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-06/msg00049.html (vendor-advisory, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-3820?
- CVE-2019-3820 is a medium-severity vulnerability in GNOME Gnome-Shell, classified under Improper Authorization. CVSS score: 4.3/10. Published 2019-02-06.
- How severe is CVE-2019-3820?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2019-3820 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.