CVE-2023-22043: Vulnerability in Oracle Java SE 8u371 (JavaFX Component) - Unauthenticated Network Access Exploit

A new vulnerability - CVE-2023-22043 - has been identified in Oracle Java SE, specifically in the JavaFX component. This vulnerability affects the Oracle Java SE version 8u371 and could potentially allow an unauthenticated attacker with network access via multiple protocols to compromise the data stored in the Oracle Java SE. Although it is considered difficult to exploit, successful attacks can lead to unauthorized creation, deletion, or modification access to critical data or all Oracle Java SE accessible data.

This article discusses the details of the vulnerability, provides a code snippet for demonstration purposes, and includes links to original references for further information.

Vulnerability Details

The CVE-2023-22043 vulnerability applies to Java deployments that primarily run in clients, utilizing sandboxed Java Web Start applications or sandboxed Java applets. In these deployments, untrusted code is loaded and run (for example, code from the internet), while relying on the Java sandbox for security. It is imperative to note that this vulnerability does not apply to Java deployments that run in servers, with the execution of only trusted code installed by the administrator.

The Common Vulnerability Scoring System (CVSS) 3.1 has assessed this vulnerability with a base score of 5.9, citing integrity impacts as its main concern. The CVSS Vector for this exploit is as follows: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N).

Code Snippet

The code snippet provided below is for demonstration purposes only and shows an example of a JavaFX component in a sandboxed applet that could be affected by this vulnerability.

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

public class VulnerableJavaFXApplet extends Application {

    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage primaryStage) {
        Label label = new Label("This JavaFX application is potentially vulnerable to CVE-2023-22043");
        StackPane root = new StackPane();
        root.getChildren().add(label);
        primaryStage.setScene(new Scene(root, 300, 250));
        primaryStage.show();
    }
}

For more information on this vulnerability, please refer to the following sources

1. Oracle Critical Patch Update Advisory - January 2023
2. NIST National Vulnerability Database - CVE-2023-22043

Conclusion

It is crucial to stay informed about any new developments regarding the CVE-2023-22043 vulnerability and apply the necessary patches or updates provided by Oracle to ensure the security of Oracle Java SE deployments and protect critical data. Ensuring to secure Java applets and applications running in a sandboxed environment will help minimize the potential risk and impact of this vulnerability.

Timeline

Published on: 07/18/2023 21:15:00 UTC
Last modified on: 07/27/2023 17:35:00 UTC