CVE-2020-14893 : Security Advisory and Response

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-2020-14893

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-2020-14893?

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-2020-14893

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, with a high impact on availability.

Technical Details of CVE-2020-14893

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

To address CVE-2020-14893, follow these mitigation strategies:

Immediate Steps to Take

Apply security patches provided by Oracle promptly.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update MySQL Server to the latest version.
Implement network segmentation to limit access to critical servers.

Patching and Updates

Stay informed about security alerts and advisories from Oracle.
Regularly check for updates and apply patches to the MySQL Server.