CVE-2020-14839 : Exploit Details and Defense Strategies

A vulnerability in Oracle MySQL Server (component: Server: Optimizer) allows a high privileged attacker to compromise the server, affecting versions 8.0.21 and prior.

Understanding CVE-2020-14839

This CVE involves a vulnerability in MySQL Server that could lead to a denial of service (DOS) attack.

What is CVE-2020-14839?

The vulnerability in Oracle MySQL Server allows a high privileged attacker with network access to compromise the server. Successful exploitation can result in a DOS attack by causing the server to hang or crash.

The Impact of CVE-2020-14839

CVSS Base Score: 4.9 (Medium Severity)
Attack Vector: Network
Attack Complexity: Low
Privileges Required: High
Availability Impact: High

Technical Details of CVE-2020-14839

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability in MySQL Server allows attackers to compromise the server, potentially leading to a DOS attack.

Affected Systems and Versions

Affected Product: MySQL Server
Vendor: Oracle Corporation
Affected Versions: 8.0.21 and prior

Exploitation Mechanism

The vulnerability can be exploited by a high privileged attacker with network access via multiple protocols to compromise the MySQL Server.

Mitigation and Prevention

Protect your systems from CVE-2020-14839 with the following steps:

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 address known vulnerabilities.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Ensure that you regularly check for updates and security advisories from Oracle to patch any vulnerabilities in MySQL Server.