CVE-2018-2640 : What You Need to Know
Learn about CVE-2018-2640, a security flaw in Oracle MySQL Server component, impacting versions 5.5.58 and earlier, 5.6.38 and earlier, and 5.7.20 and earlier. Find out the impact, technical details, and mitigation steps.
A security flaw has been identified in the MySQL Server component of Oracle MySQL, affecting versions 5.5.58 and earlier, 5.6.38 and earlier, and 5.7.20 and earlier. This vulnerability could be exploited by an attacker with low privileges and network access, potentially leading to a denial of service situation.
Understanding CVE-2018-2640
This CVE involves a vulnerability in the MySQL Server component of Oracle MySQL, specifically in the Server Optimizer module.
What is CVE-2018-2640?
The security flaw in the MySQL Server component of Oracle MySQL allows attackers with low privileges and network access to compromise the server, potentially causing a denial of service situation.
The Impact of CVE-2018-2640
If successfully exploited, this vulnerability could result in unauthorized manipulation, leading to frequent crashes or hangs of the MySQL Server, causing a denial of service (DOS) situation. The Common Vulnerability Scoring System (CVSS) 3.0 has assigned a base score of 6.5 to this vulnerability, specifically impacting availability.
Technical Details of CVE-2018-2640
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability in the MySQL Server component of Oracle MySQL allows attackers with low privileges and network access to compromise the server, potentially causing a denial of service situation.
Affected Systems and Versions
- Versions 5.5.58 and earlier
- Versions 5.6.38 and earlier
- Versions 5.7.20 and earlier
Exploitation Mechanism
The vulnerability can be exploited by a malicious attacker with low privileges and network access through various protocols, allowing them to compromise the MySQL Server.
Mitigation and Prevention
Protecting systems from CVE-2018-2640 is crucial to maintaining security.
Immediate Steps to Take
- Apply patches provided by Oracle or other relevant vendors promptly.
- Monitor for any unusual server behavior that could indicate exploitation of the vulnerability.
Long-Term Security Practices
- Regularly update and patch MySQL Server to address known vulnerabilities.
- Implement strong network security measures to prevent unauthorized access.
Patching and Updates
Ensure that the MySQL Server is regularly updated with the latest security patches to mitigate the risk of exploitation.