CVE-2024-21239 - Critical Vulnerability in MySQL Server InnoDB Component: Potential for Complete Denial of Service (DOS)

A new vulnerability has been discovered, titled CVE-2024-21239, which affects the MySQL Server product of Oracle MySQL. Specifically, this vulnerability is found in the InnoDB component and impacts all supported versions, including 8..39 and prior, 8.4.2 and prior, and 9..1 and prior. If left unpatched, this vulnerability allows a high privileged attacker to compromise the MySQL Server via multiple protocols, potentially resulting in a complete loss of availability (hang or crash).

Severity

This vulnerability has been assigned a CVSS 3.1 Base Score of 4.9, with the primary impact being on availability. The CVSS Vector for this vulnerability is: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

Exploit Details

In order to exploit this vulnerability, a high privileged attacker must have network access via multiple protocols to the MySQL Server. Once access is gained, the attacker could potentially cause a complete Denial of Service (DOS), rendering the MySQL Server unresponsive and causing a hang or crash. Given the wide usage of MySQL Server in various applications, this vulnerability poses a significant risk to the affected organizations and their users.

Code Snippet

While the exact details of the vulnerability are not yet public, the following is a general example of what a potential exploitation code snippet might look like:

import socket

target_ip = "192.168.1.100"
target_port = 3306

# Craft malicious payload to exploit CVE-2024-21239
malicious_payload = b"\x00\x00\x00\x00..."

# Establish connection to target MySQL server
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((target_ip, target_port))

# Send malicious payload
sock.send(malicious_payload)

# Close connection
sock.close()

References

- Original CVE details: CVE-2024-21239
- Vulnerability details from Oracle: MySQL Server Security Patch
- CVSS Calculator for CVE-2024-21239: CVSS 3.1 Calculator

Mitigation

To protect against this vulnerability, Oracle has released patches for the affected MySQL Server versions. It is highly recommended for organizations running the vulnerable versions to apply these patches as soon as possible. Moreover, organizations should ensure they have a robust patch management process in place to keep their software up-to-date and reduce the risk of future exploits. In addition, implementing strong network access controls and closely monitoring network traffic can help in early detection and prevention of potential attack attempts.

Timeline

Published on: 10/15/2024 20:15:13 UTC
Last modified on: 10/16/2024 20:36:59 UTC