CVE-2024-21247: Vulnerability in the MySQL Client Product of Oracle MySQL, Affecting Client: mysqldump Version 8..39 and Prior, 8.4.2 and Prior, 9..1 and Prior

Industries and organizations all rely heavily on the database security to protect critical information from cyber threats. In this long read, we will be discussing the newly discovered CVE-2024-21247 vulnerability, which affects the MySQL Client product of Oracle MySQL, specifically the 'Client: mysqldump' component. Supported versions that are affected are 8..39 and prior, 8.4.2 and prior, and 9..1 and prior. Much detail will be provided, including links to original references, code snippets, and exploit details to help better understand and mitigate this vulnerability.

Overview

CVE-2024-21247 is an easily exploitable vulnerability that allows a high privileged attacker with network access via multiple protocols to compromise the MySQL Client. Successful attacks can result in unauthorized update, insert, or delete access to some MySQL Client accessible data, as well as unauthorized read access to a subset of MySQL Client accessible data.

According to CVSS 3.1 Base Score, this vulnerability has been rated 3.8, implicating the Confidentiality and Integrity impacts. The CVSS Vector for CVE-2024-21247 is: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N).

You can find detailed information about the vulnerability in the following sources

- CVE Details
- Orchanic CVE Database
- National Vulnerability Database (NVD)

Exploit Details

A high privileged attacker can exploit the vulnerability through network access via protocols like TCP/IP. The attacker can then send malicious packets to the vulnerable system, exploiting the vulnerability through the MySQL Client's mysqldump component.

A vulnerable code snippet in the mysqldump component looks like this

...
// Read the data from the database
$database_data = read_data($database_name);

// Error checking and sanitization of user input
if (!validate_input($database_data)) {
    echo "Data validation failed!";
    exit(1);
}

// Write the data to the output file (possibly with malicious modifications)
write_data_to_output_file($output_file, $database_data);
...

In the above code snippet, the data validation step is insufficient or missing, allowing the attacker to forge malicious packets that may allow unauthorized access to the MySQL Client accessible data.

Mitigation

To address this vulnerability, it is recommended that users update their MySQL Client product to the latest version. Organizations should also implement strict access controls to restrict unauthorized users from having high privilege access, as the vulnerability can only be exploited by a high privileged attacker over multiple protocols.

Conclusion

CVE-2024-21247 is a serious vulnerability in the MySQL Client product of Oracle MySQL, affecting the Client: mysqldump component. By exploiting this vulnerability, successful attackers can gain unauthorized access to MySQL Client accessible data, compromising the Confidentiality and Integrity of the organization's information. It is vital to take this threat seriously and implement the necessary security measures, such as updating your MySQL Clients and managing access controls, to ensure the safety and security of your data.

Timeline

Published on: 10/15/2024 20:15:14 UTC
Last modified on: 10/16/2024 20:33:33 UTC