CVE-2017-3251 Explained : Impact and Mitigation

Oracle MySQL Server versions 5.7.16 and earlier are affected by a vulnerability in the Server Optimizer component, allowing a highly privileged attacker to compromise the server through network access. The CVSS v3.0 Base Score for this vulnerability is 4.9.

Understanding CVE-2017-3251

This CVE involves a vulnerability in the MySQL Server component of Oracle MySQL, impacting versions 5.7.16 and earlier.

What is CVE-2017-3251?

The vulnerability in the Server Optimizer component of Oracle MySQL Server versions 5.7.16 and earlier can be exploited by a highly privileged attacker with network access through multiple protocols, potentially leading to a denial of service.

The Impact of CVE-2017-3251

Successful exploitation can allow unauthorized activity, causing the MySQL Server to hang or crash repeatedly, resulting in a complete denial of service.
The CVSS v3.0 Base Score of 4.9 indicates the vulnerability's impact on availability.

Technical Details of CVE-2017-3251

The technical details of the CVE provide insight into the vulnerability and its implications.

Vulnerability Description

The vulnerability allows a highly privileged attacker to compromise the MySQL Server through network access, potentially leading to a denial of service.

Affected Systems and Versions

Product: MySQL Server
Vendor: Oracle
Versions Affected: 5.7.16 and earlier

Exploitation Mechanism

Highly privileged attackers with network access can exploit the vulnerability through multiple protocols, compromising the MySQL Server.

Mitigation and Prevention

Taking immediate steps and implementing long-term security practices are crucial to mitigating the risks associated with CVE-2017-3251.

Immediate Steps to Take

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

Long-Term Security Practices

Regularly update and patch the MySQL Server to address known vulnerabilities.
Conduct security audits and assessments to identify and mitigate potential risks.

Patching and Updates

Stay informed about security advisories from Oracle and apply relevant patches promptly to secure the MySQL Server.