Screenshot tool allows viewing open windows when session is locked
CVE-2023-43090

5.5MEDIUM

Key Information:

Vendor: Red Hat
Status: gnome-shell; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9
Vendor: CVE Published:; 22 September 2023

Summary

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 Version(s)

gnome-shell 44.5

gnome-shell 43.9

References

https://access.redhat.com/security/cve/CVE-2023-43090

vdb-entryx_refsource_REDHAT

https://bugzilla.redhat.com/show_bug.cgi?id=2239087

issue-trackingx_refsource_REDHAT

https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/6990

CVSS V3.1

Score:

5.5

Severity:

MEDIUM

Confidentiality:

High

Integrity:

None

Availability:

High

Attack Vector:

Local

Attack Complexity:

Low

Privileges Required:

Low

User Interaction:

None

Scope:

Unchanged

Timeline

Vulnerability published
Sep 22, 2023
Vulnerability Reserved
Sep 15, 2023

Credit

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