CVE-2020-2686 Explained : Impact and Mitigation
Learn about CVE-2020-2686, a vulnerability in Oracle MySQL Server allowing attackers to compromise the server, potentially leading to a denial of service (DOS) attack. Find out the impacted versions and mitigation steps.
A vulnerability in Oracle MySQL Server (component: Server: Optimizer) allows attackers to compromise the server, potentially leading to a denial of service (DOS) attack.
Understanding CVE-2020-2686
This CVE involves a vulnerability in MySQL Server that can be exploited by attackers with network access, potentially causing a DOS attack.
What is CVE-2020-2686?
CVE-2020-2686 is a vulnerability in Oracle MySQL Server, affecting versions 8.0.18 and prior. It allows low privileged attackers to compromise the server, leading to potential DOS attacks.
The Impact of CVE-2020-2686
The vulnerability can result in unauthorized access, causing the MySQL Server to hang or crash, leading to a complete denial of service. The CVSS 3.0 Base Score is 6.5, with a high availability impact.
Technical Details of CVE-2020-2686
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability in MySQL Server allows low privileged attackers with network access to compromise the server, potentially causing a DOS attack.
Affected Systems and Versions
- Product: MySQL Server
- Vendor: Oracle Corporation
- Affected Versions: 8.0.18 and prior
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: Low
- User Interaction: None
- Scope: Unchanged
- CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Mitigation and Prevention
Protecting systems from CVE-2020-2686 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 activities.
- Restrict network access to the MySQL Server.
Long-Term Security Practices
- Regularly update and patch MySQL Server to address vulnerabilities.
- Implement network segmentation to limit access to critical servers.
- Conduct regular security audits and penetration testing.
Patching and Updates
- Stay informed about security updates from Oracle for MySQL Server.
- Apply patches as soon as they are released to mitigate the risk of exploitation.