CVE-2024-21236 - MySQL Server Vulnerability: InnoDB Component Can Cause DOS

A high-level vulnerability, designated as CVE-2024-21236, has been identified in the MySQL Server product of Oracle MySQL. The affected component is InnoDB. The vulnerability affects the following versions of the MySQL Server: 8..39 and prior, 8.4.2 and prior, and 9..1 and prior. This vulnerability allows a high-privileged attacker with network access via multiple protocols to compromise the MySQL Server. Successful attacks can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of the MySQL Server. The CVSS 3.1 Base Score for this vulnerability is 4.9, primarily due to its potential impact on availability. The CVSS Vector is represented as (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

Exploit Details

The vulnerability stems from the InnoDB component of the MySQL Server. The InnoDB storage engine is a powerful and robust storage solution for MySQL Database Systems and provides various features such as foreign key constraints, transaction support, and full-text search functions. However, the MySQL Server versions mentioned earlier contain a flaw in the InnoDB component that can be exploited by an attacker with high-level privileges.

The flaw can enable an attacker to compromise the MySQL Server and cause a Denial of Service (DOS) attack. This type of attack can lead to a complete crash of the system by causing a hang or repeatedly crashing the MySQL Server.

It is important to note that the attacker must possess high-level privileges and network access via multiple protocols to exploit this vulnerability. Further, the attacker does not need user interaction to execute the attack, which adds to the severity of this vulnerability.

Code Snippet

Due to the sensitive nature of the exploit, no specific code snippet can be provided here. However, the vulnerability lies within the InnoDB component of the MySQL Server, and a thorough examination of this component is recommended for an organization's development and security teams. In addition, monitoring network access and implementing proper privilege management is essential to prevent unauthorized access and minimize the risk of exploitation.

Original references for this vulnerability and its impact can be found at the following sources

- Oracle Critical Patch Update Advisory - July 2024: https://www.oracle.com/security-alerts/cpujul2024.html
- MySQL Server Security Advisory: https://www.mysql.com/security-advisory/
- CVE-2024-21236 Details: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-21236
- National Vulnerability Database (NVD) - CVE-2024-21236: https://nvd.nist.gov/vuln/detail/CVE-2024-21236

Mitigation and Recommendations

To mitigate the risk of this vulnerability, it is strongly recommended that organizations using the affected versions of MySQL Server update to the latest supported versions. Additionally, monitoring network access, implementing proper firewall rules, and enforcing strict privilege management can significantly reduce the risk of exploitation.

Regularly applying security patches and updates as they become available.

- Ensuring that servers and services are configured with the least amount of privileges required for their functions.
- Conducting periodic security audits and assessments to identify and rectify any weaknesses in the system.
- Implementing intrusion detection and prevention systems to monitor and protect against unauthorized access or malicious activity.

By following these steps, organizations can effectively minimize the impact of CVE-2024-21236 and maintain the security and integrity of their MySQL Server deployments.

Timeline

Published on: 10/15/2024 20:15:12 UTC
Last modified on: 10/16/2024 20:41:14 UTC