CVE-2018-2778 : Security Advisory and Response

Oracle MySQL Server prior to version 5.7.21 is affected by a vulnerability in the Optimizer subcomponent, allowing a highly privileged attacker to compromise the server. The CVSS 3.0 Base Score is 4.9.

Understanding CVE-2018-2778

This CVE involves a vulnerability in Oracle MySQL Server that can lead to a denial-of-service situation.

What is CVE-2018-2778?

The vulnerability in Oracle MySQL Server's Optimizer subcomponent affects versions 5.7.21 and earlier. It can be exploited by a highly privileged attacker with network access through multiple protocols, potentially compromising the server.

The Impact of CVE-2018-2778

Successful exploitation can result in unauthorized actions causing the server to hang or crash, leading to a denial-of-service situation.
The CVSS 3.0 Base Score for this vulnerability is 4.9, impacting availability.

Technical Details of CVE-2018-2778

Oracle MySQL Server is vulnerable to attacks due to issues in the Optimizer subcomponent.

Vulnerability Description

The vulnerability allows a highly privileged attacker to compromise the MySQL Server, potentially causing it to hang or crash, resulting in a denial-of-service situation.

Affected Systems and Versions

Product: MySQL Server
Vendor: Oracle Corporation
Versions affected: 5.7.21 and prior

Exploitation Mechanism

The vulnerability can be exploited by a highly privileged attacker with network access through multiple protocols, leading to a compromise of the MySQL Server.

Mitigation and Prevention

To address CVE-2018-2778, follow these steps:

Immediate Steps to Take

Update MySQL Server to version 5.7.21 or later to mitigate the vulnerability.
Restrict network access to the MySQL Server to trusted sources only.

Long-Term Security Practices

Regularly monitor and apply security patches to the MySQL Server.
Implement network segmentation to limit the exposure of the server to potential attackers.
Conduct regular security assessments and audits to identify and address vulnerabilities.

Patching and Updates

Ensure timely installation of security patches and updates for Oracle MySQL Server to address known vulnerabilities.