CVE-2022-21363 - Critical Vulnerability in MySQL Connectors can Lead to Connector Takeover

CVE-2022-21363 is a security vulnerability with a CVSS 3.1 base score of 6.6, which can have a serious impact on the confidentiality, integrity, and availability of your system. The vulnerability has been identified in the MySQL Connectors product of Oracle MySQL, specifically in the Connector/J component. This post will provide a detailed explanation of the vulnerability, provide code snippets, links to original references, and possible exploit details. Affected versions include 8..27 and prior, and successful exploitation could result in the takeover of the MySQL Connectors.

Exploit Details

In order to exploit this vulnerability, an attacker must have high privileges in the system and network access via multiple protocols. Although it is difficult to exploit, the compromise of MySQL Connectors can have severe consequences for your system. The CVSS vector for this vulnerability is: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H).

Code Snippet

The vulnerability exists in the MySQL Connector/J component, and a potential exploit might look like the following code snippet:

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class CVE_2022_21363_Exploit {
    public static void main(String[] args) {
        String url = "jdbc:mysql://target_host:target_port/database_name";
        String user = "privileged_user";
        String password = "user_password";

        try {
            Connection connection = DriverManager.getConnection(url, user, password);
            // insert malicious code here to exploit the vulnerability
            connection.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

Original References

1. CVE-2022-21363: https://nvd.nist.gov/vuln/detail/CVE-2022-21363
2. Oracle MySQL Connectors: https://www.mysql.com/products/connector/
3. Connector/J: https://dev.mysql.com/doc/connector-j/8./en/

Mitigation and Prevention

The best way to protect your system from this vulnerability is to update your MySQL Connectors to the latest version. Oracle has already released updates to address this issue, so it is essential to apply these patches as soon as possible. You can find the latest version of MySQL Connectors and Connector/J on the official product website (https://www.mysql.com/products/connector/).

In addition to updating your software, it's also advisable to follow best practices for securing your system, such as:

Conclusion

CVE-2022-21363 is a critical vulnerability that can potentially lead to the takeover of your MySQL Connectors. The best way to mitigate this vulnerability is by updating your MySQL Connectors to the latest version and implementing strong security practices. Stay informed about security updates and always be vigilant when it comes to protecting your system.

Timeline

Published on: 01/19/2022 12:15:00 UTC
Last modified on: 05/27/2022 14:50:00 UTC