In this post, we'll discuss a vulnerability (CVE-2024-21243) that affects the MySQL Server product of Oracle MySQL, specifically the Telemetry component. The affected versions are 8.4.2 and prior as well as 9..1 and prior. By exploiting this vulnerability, a high privileged attacker with network access via multiple protocols can compromise MySQL Server, potentially gaining unauthorized read access to a subset of the accessible data.

It's important to note that this vulnerability is difficult to exploit and impacts the confidentiality domain, with a CVSS 3.1 Base Score of 2.2. The CVSS Vector for this vulnerability is (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N).

Before we dive into the exploitation details, let's discuss the origins of this vulnerability and how it affects the system.

Vulnerability Description

This vulnerability (CVE-2024-21243) relates to the Telemetry component in Oracle MySQL Server. Telemetry is responsible for collecting and transmitting diagnostic data and various usage metrics back to Oracle. However, due to a misconfiguration in the software, an attacker who has high privileges in the system and network access via multiple protocols can exploit this flaw and potentially gain read access to some of the accessible data inside MySQL Server.

The potential impact of this vulnerability includes unauthorized access to sensitive data in the database, which could lead to further exploitation.

Exploitation Details

Given the difficulty of exploiting this vulnerability, the attacker must meet specific criteria and have specific access:

1. The attacker has to have a high level of privileges on the system, such as administrative or superuser access.

Network access to the target system via multiple protocols is required.

To exploit this vulnerability, an attacker carefully crafts malicious packets to exploit the misconfiguration in the MySQL Server's Telemetry component. The attacker then sends the crafted packets to the server, where the malicious code can execute and gain unauthorized access to the server's data.

Here's a sample code snippet that illustrates the general idea

# CVE-2024-21243 Exploit
# This is a sample code to demonstrate the concept, not an actual exploit
import socket

def exploit(target_ip, target_port):
    crafted_packet = create_crafted_packet()
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.connect((target_ip, target_port))
    s.sendall(crafted_packet)
    response = s.recv(1024)
    s.close()
    return response

def create_crafted_packet():
    # This is a conceptual example of crafting a packet to exploit CVE-2024-21243
    packet_data = "Exploit_Packet_Placeholder"
    return packet_data.encode()

if __name__ == "__main__":
    target_ip = "192.168.1.1"
    target_port = 3306
    response = exploit(target_ip, target_port)
    print("Exploit response: ", response)

Original References and Further Resources

It's crucial to stay informed and up-to-date with the latest security vulnerabilities. For more information on this vulnerability and its mitigation, you can refer to the following resources:

1. Oracle Security Alert for CVE-2024-21243: Link
2. NIST National Vulnerability Database (NVD) CVE-2024-21243: Link
3. Common Vulnerabilities and Exposures (CVE) entry for CVE-2024-21243: Link

We strongly recommend keeping your MySQL Server software up-to-date and following security best practices to prevent attackers from exploiting vulnerabilities like this one. Regularly review security patches and apply them when necessary.

Timeline

Published on: 10/15/2024 20:15:13 UTC
Last modified on: 10/16/2024 20:35:41 UTC