CVE-2023-43090 : What You Need to Know

A detailed overview of the CVE-2023-43090 vulnerability in GNOME Shell, affecting Fedora and Red Hat Enterprise Linux systems.

Understanding CVE-2023-43090

This section provides insights into the nature of the vulnerability and its impact.

What is CVE-2023-43090?

CVE-2023-43090 is a vulnerability found in GNOME Shell, where the lock screen allows an unauthenticated local user to view windows of the locked desktop session using keyboard shortcuts to unlock the screenshot tool.

The Impact of CVE-2023-43090

The vulnerability poses a medium severity risk with high confidentiality impact, enabling unauthorized access to sensitive information on the locked screen.

Technical Details of CVE-2023-43090

Explore the technical aspects of the CVE-2023-43090 vulnerability affecting various versions of GNOME Shell on Fedora and Red Hat Enterprise Linux systems.

Vulnerability Description

In GNOME Shell, an unauthenticated local user can bypass the lock screen and view windows of the session through the screenshot tool's unlocked functionality.

Affected Systems and Versions

gnome-shell 44.5 and 43.9: Unaffected
Red Hat Enterprise Linux 7: Unaffected
Red Hat Enterprise Linux 8: Unaffected
Red Hat Enterprise Linux 9: Unaffected
Fedora 37: Affected
Fedora 38: Affected

Exploitation Mechanism

The exploit involves utilizing specific keyboard shortcuts while the system is locked to access restricted features of the screenshot tool in GNOME Shell.

Mitigation and Prevention

Learn how to protect your systems from the CVE-2023-43090 vulnerability through immediate steps and long-term security practices.

Immediate Steps to Take

Users should update their GNOME Shell to patched versions to mitigate the vulnerability and ensure system security.

Long-Term Security Practices

Implement security best practices, such as regularly updating software, employing strong authentication mechanisms, and monitoring for unusual system behavior.

Patching and Updates

Refer to vendor sites for patched versions of GNOME Shell on affected systems:

Red Hat Enterprise Linux: Red Hat Package Browser
Fedora: Fedora Project Packages