CVE-2019-2757 : Vulnerability Insights and Analysis

Oracle MySQL Server versions 5.7.26 and prior, as well as 8.0.16 and prior, are affected by a vulnerability in the Server: Optimizer subcomponent. This vulnerability can be exploited by a highly privileged attacker with network access, potentially leading to a denial of service situation.

Understanding CVE-2019-2757

This CVE involves a vulnerability in the MySQL Server component of Oracle MySQL, impacting specific versions and potentially allowing unauthorized individuals to compromise the server.

What is CVE-2019-2757?

The vulnerability in the MySQL Server component of Oracle MySQL, specifically in the Server: Optimizer subcomponent, affects versions 5.7.26 and earlier, as well as 8.0.16 and earlier. It can be exploited by a highly privileged attacker with network access through various protocols to compromise the MySQL Server.

The Impact of CVE-2019-2757

If successfully exploited, this vulnerability can allow unauthorized individuals to cause the server to hang or crash repeatedly, resulting in a denial of service (DoS) situation. The Common Vulnerability Scoring System (CVSS) 3.0 Base Score for this vulnerability is 4.9, with the primary impact being on availability.

Technical Details of CVE-2019-2757

Oracle MySQL Server is affected by a vulnerability in the Server: Optimizer subcomponent, potentially leading to a denial of service situation.

Vulnerability Description

The vulnerability allows a highly privileged attacker with network access to compromise the MySQL Server, potentially causing it to hang or crash, leading to a denial of service.

Affected Systems and Versions

Product: MySQL Server
Vendor: Oracle Corporation
Versions Affected: 5.7.26 and prior, 8.0.16 and prior

Exploitation Mechanism

Highly privileged attacker with network access can exploit the vulnerability through various protocols to compromise the MySQL Server.

Mitigation and Prevention

Taking immediate steps and implementing long-term security practices are crucial to mitigate the risks associated with CVE-2019-2757.

Immediate Steps to Take

Apply vendor patches and updates promptly to address the vulnerability.
Monitor network traffic for any suspicious activity that could indicate an exploit attempt.

Long-Term Security Practices

Regularly update and patch all software and systems to prevent known vulnerabilities.
Implement strong access controls and least privilege principles to limit the impact of potential attacks.

Patching and Updates

Stay informed about security advisories and updates from Oracle Corporation and other relevant vendors to apply patches as soon as they are available.