CVE-2020-14794 : Exploit Details and Defense Strategies
Learn about CVE-2020-14794, a vulnerability in Oracle MySQL Server that allows attackers to compromise the server, potentially leading to a denial of service attack. Find out the impacted versions and mitigation steps.
A vulnerability in Oracle MySQL Server (component: Server: Optimizer) allows a high privileged attacker to compromise the server, potentially leading to a denial of service (DOS) attack.
Understanding CVE-2020-14794
This CVE involves a vulnerability in MySQL Server that could be exploited by an attacker with network access to compromise the server.
What is CVE-2020-14794?
The vulnerability in MySQL Server allows a high privileged attacker to exploit the server, potentially causing a DOS attack. The affected versions are 8.0.21 and prior.
The Impact of CVE-2020-14794
Successful exploitation of this vulnerability could result in unauthorized access, leading to a hang or crash of the MySQL Server. The CVSS 3.1 Base Score is 4.9, indicating medium severity with high availability impact.
Technical Details of CVE-2020-14794
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability in MySQL Server allows a high privileged attacker with network access to compromise the server, potentially causing a DOS attack.
Affected Systems and Versions
- Product: MySQL Server
- Vendor: Oracle Corporation
- Versions affected: 8.0.21 and prior
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: High
- User Interaction: None
- Scope: Unchanged
- CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Mitigation and Prevention
Protecting systems from this vulnerability requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security patches provided by Oracle promptly.
- Monitor network traffic for any suspicious activity.
- Restrict network access to the MySQL Server.
Long-Term Security Practices
- Regularly update and patch MySQL Server to the latest version.
- Conduct security audits and penetration testing to identify vulnerabilities.
- Implement network segmentation to limit the impact of potential attacks.
Patching and Updates
Ensure that all security patches and updates released by Oracle for MySQL Server are applied promptly to mitigate the risk of exploitation.