Get insights into CVE-2023-21913, a vulnerability in Oracle MySQL Server 8.0.31 and prior versions, allowing high-privileged attackers to disrupt services through DOS attacks.
This CVE-2023-21913 involves a vulnerability in the MySQL Server product of Oracle MySQL, specifically in the Server Optimizer component. The affected versions are 8.0.31 and prior. This vulnerability can be easily exploited by a high-privileged attacker with network access through multiple protocols, allowing them to compromise the MySQL Server. Successful exploitation of this vulnerability can lead to unauthorized abilities to cause a hang or frequently repeatable crash (complete DOS) of the MySQL Server.
Understanding CVE-2023-21913
This section delves deeper into the specifics of CVE-2023-21913, including its impact and technical details.
What is CVE-2023-21913?
CVE-2023-21913 is a vulnerability within the MySQL Server product of Oracle MySQL, affecting versions 8.0.31 and prior. It allows a high-privileged attacker with network access via various protocols to compromise the MySQL Server, potentially leading to a denial of service (DOS) attack.
The Impact of CVE-2023-21913
The impact of CVE-2023-21913 is significant as it allows attackers to exploit the vulnerability to disrupt the normal functioning of the MySQL Server, potentially causing service outages and unauthorized access.
Technical Details of CVE-2023-21913
Here, we explore the technical aspects of CVE-2023-21913, including the vulnerability description, affected systems and versions, and the exploitation mechanism.
Vulnerability Description
The vulnerability in the MySQL Server product of Oracle MySQL (Server Optimizer component) allows high-privileged attackers with network access to compromise the server, leading to a DOS attack. The CVSS 3.1 Base Score for this vulnerability is 4.9 with availability impacts.
Affected Systems and Versions
The affected vendor is Oracle Corporation, and the impacted product is MySQL Server. Versions 8.0.31 and prior are vulnerable to this exploit, requiring immediate attention to mitigate the risk.
Exploitation Mechanism
To exploit CVE-2023-21913, attackers need high privileges and network access via multiple protocols. By leveraging this vulnerability, attackers can disrupt the MySQL Server's operations, resulting in potential service interruptions and unauthorized actions.
Mitigation and Prevention
To protect systems from CVE-2023-21913, immediate steps must be taken to address the vulnerability and prevent exploitation. Implementing long-term security practices and applying patches and updates are crucial.
Immediate Steps to Take
Long-Term Security Practices
Patching and Updates