CVE-2019-2774 : Exploit Details and Defense Strategies

A vulnerability in the Oracle MySQL Server component, affecting versions 5.7.26 and earlier, as well as 8.0.16 and earlier, can lead to unauthorized server manipulation and denial of service.

Understanding CVE-2019-2774

This CVE involves a vulnerability in the Oracle MySQL Server component, specifically in the Optimizer section, impacting versions 5.7.26 and prior, and 8.0.16 and prior.

What is CVE-2019-2774?

The vulnerability in Oracle MySQL Server allows an attacker with high privileges and network access to compromise the server through various protocols. Successful exploitation can result in unauthorized server manipulation, leading to frequent crashes or hangs, causing a denial of service.

The Impact of CVE-2019-2774

The vulnerability is easily exploitable by attackers with high privileges and network access.
Successful exploitation can lead to unauthorized manipulation of the server, causing frequent crashes or hangs, resulting in a denial of service.
The CVSS 3.0 Base Score for this vulnerability is 4.9, indicating availability impacts.

Technical Details of CVE-2019-2774

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability in the Oracle MySQL Server component, specifically in the Optimizer section, affects versions 5.7.26 and earlier, as well as 8.0.16 and earlier. It allows high privileged attackers with network access to compromise the server through various protocols.

Affected Systems and Versions

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

Exploitation Mechanism

The vulnerability can be exploited by an attacker with high privileges and network access through various protocols to compromise the MySQL Server, leading to unauthorized server manipulation and denial of service.

Mitigation and Prevention

Protecting systems from CVE-2019-2774 requires immediate steps and long-term security practices.

Immediate Steps to Take

Apply security patches provided by Oracle Corporation promptly.
Monitor network traffic for any suspicious activity.
Restrict network access to the MySQL Server to authorized users only.

Long-Term Security Practices

Regularly update and patch the MySQL Server to address known vulnerabilities.
Implement strong access controls and authentication mechanisms.
Conduct regular security audits and penetration testing to identify and address potential weaknesses.

Patching and Updates

Ensure that the MySQL Server is updated with the latest security patches and updates to mitigate the risk of exploitation.