CVE-2020-14777 : Vulnerability Insights and Analysis
Learn about CVE-2020-14777, a vulnerability in Oracle MySQL Server that allows attackers to compromise the server, potentially leading to a denial of service attack. Find out how to mitigate and prevent this security risk.
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-2020-14777
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-2020-14777?
The vulnerability in Oracle MySQL Server (component: Server: Optimizer) affects versions 8.0.21 and prior. It allows a high privileged attacker with network access via multiple protocols to compromise the server.
The Impact of CVE-2020-14777
Successful exploitation of this vulnerability can result in unauthorized access, potentially causing a hang or frequently repeatable crash (DOS) of the MySQL Server. The CVSS 3.1 Base Score is 4.9, indicating high availability impact.
Technical Details of CVE-2020-14777
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: 8.0.21 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-2020-14777, follow these mitigation strategies:
Immediate Steps to Take
- Apply vendor patches promptly
- Monitor network traffic for signs of exploitation
- Restrict network access to vulnerable systems
Long-Term Security Practices
- Regularly update and patch MySQL Server
- Implement network segmentation to limit the attack surface
- Conduct regular security assessments and audits
Patching and Updates
- Stay informed about security alerts from Oracle Corporation
- Apply security patches as soon as they are released