Vulnerability · Published Sep 22, 2023 · Assigned by fedora
CVE-2023-43090Gnome-shell: screenshot tool allows viewing open windows when session is locked
Medium 5.5
In plain English
A medium-severity missing authorization in gnome-shell. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.3%top 76.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A vulnerability was found in GNOME Shell. GNOME Shell's lock screen allows an unauthenticated local user to view windows of the locked desktop session by using keyboard shortcuts to unlock the restricted functionality of the screenshot tool.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | gnome-shell | 43.6-1~deb12u2 | DEBIAN-CVE-2023-43090 |
| Debian:12 | gnome-shell | 43.6-1~deb12u2 | DSA-5501-1 |
| Debian:13 | gnome-shell | 44.5-1 | DEBIAN-CVE-2023-43090 |
| Debian:14 | gnome-shell | 44.5-1 | DEBIAN-CVE-2023-43090 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| gnome-shell | 0 – before 42.*43.0 – before 43.944.0 – before 44.5 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
References
- https://access.redhat.com/security/cve/CVE-2023-43090 vdb-entry, x_refsource_REDHAT
- RHBZ#2239087 issue-tracking, x_refsource_REDHAT
- https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/6990
- https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2944