CVE-2020-2903 : Security Advisory and Response
Learn about CVE-2020-2903, a vulnerability in Oracle MySQL Server allowing high privileged 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 allows a high privileged attacker to compromise the server, potentially leading to a denial of service (DOS) attack.
Understanding CVE-2020-2903
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-2020-2903?
The vulnerability in MySQL Server (component: Server: Connection Handling) affects versions 8.0.19 and prior. It allows a high privileged attacker to compromise the server via multiple protocols, potentially resulting in a DOS attack.
The Impact of CVE-2020-2903
Successful exploitation of this vulnerability can lead to unauthorized actions causing the server to hang or crash, impacting the availability of MySQL Server. The CVSS 3.0 Base Score is 4.9, indicating a medium severity vulnerability with high availability impact.
Technical Details of CVE-2020-2903
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 leading to a DOS attack.
Affected Systems and Versions
- Product: MySQL Server
- Vendor: Oracle Corporation
- Affected Versions: 8.0.19 and prior
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: High
- User Interaction: None
- Scope: Unchanged
- Availability Impact: High
- CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Mitigation and Prevention
To address CVE-2020-2903, 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 MySQL Server.
Long-Term Security Practices
- Regularly update 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 updates from Oracle for MySQL Server.
- Apply patches as soon as they are released to mitigate the vulnerability effectively.