CVE-2020-14891 Explained : Impact and Mitigation
Learn about CVE-2020-14891, 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. The affected versions are 8.0.21 and prior, potentially leading to a denial of service (DOS) attack.
Understanding CVE-2020-14891
This CVE involves a vulnerability in MySQL Server that can be exploited by an attacker with network access, resulting in a DOS attack.
What is CVE-2020-14891?
The vulnerability in Oracle MySQL Server allows a high privileged attacker to compromise the server, potentially causing a DOS attack. The affected versions are 8.0.21 and earlier.
The Impact of CVE-2020-14891
Successful exploitation of this vulnerability can lead to unauthorized access, causing a hang or repeatable crash of the MySQL Server. The CVSS 3.1 Base Score is 4.9, with a high impact on availability.
Technical Details of CVE-2020-14891
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 resulting in 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-2020-14891, follow these mitigation strategies:
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.
- Implement network segmentation to limit access to critical servers.
- Conduct regular security audits and penetration testing.
Patching and Updates
- Stay informed about security alerts and updates from Oracle.
- Apply patches and updates as soon as they are released to mitigate the vulnerability.