CVE-2023-43090

Gnome-shell: screenshot tool allows viewing open windows when session is locked

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

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.

Se encontró una vulnerabilidad en GNOME Shell. La pantalla de bloqueo de GNOME Shell permite a un usuario local no autenticado ver ventanas de la sesión de escritorio bloqueada mediante el uso de atajos de teclado para desbloquear la funcionalidad restringida de la herramienta de captura de pantalla.

Mickael Karatekin discovered that GNOME Shell incorrectly allowed the screenshot tool to view open windows when a session was locked. A local attacker could possibly use this issue to obtain sensitive information.

*Credits: Red Hat would like to thank Mickael Karatekin (SysDream) for reporting this issue.

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

Single

Confidentiality

Complete

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2023-09-15 CVE Reserved
2023-09-19 CVE Published
2024-08-02 CVE Updated
2024-08-02 First Exploit
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-862: Missing Authorization

CAPEC

References (4)

URL	Tag	Source
https://access.redhat.com/security/cve/CVE-2023-43090	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2239087	Issue Tracking

URL	Date	SRC
https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/6990	2024-08-02

URL	Date	SRC
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2944	2024-07-03

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Gnome Search vendor "Gnome"		Gnome-shell Search vendor "Gnome" for product "Gnome-shell"				>= 43 < 43.9 Search vendor "Gnome" for product "Gnome-shell" and version " >= 43 < 43.9"		-		Affected
Gnome Search vendor "Gnome"		Gnome-shell Search vendor "Gnome" for product "Gnome-shell"				>= 44 < 44.5 Search vendor "Gnome" for product "Gnome-shell" and version " >= 44 < 44.5"		-		Affected
Gnome Search vendor "Gnome"		Gnome-shell Search vendor "Gnome" for product "Gnome-shell"				42 Search vendor "Gnome" for product "Gnome-shell" and version "42"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				37 Search vendor "Fedoraproject" for product "Fedora" and version "37"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				38 Search vendor "Fedoraproject" for product "Fedora" and version "38"		-		Affected