CVE-2017-3638 : Security Advisory and Response

Oracle MySQL Server vulnerability in the Optimizer subcomponent affecting versions 5.7.18 and earlier.

Understanding CVE-2017-3638

A vulnerability in Oracle MySQL's MySQL Server component, specifically in the Optimizer subcomponent, impacting versions 5.7.18 and earlier.

What is CVE-2017-3638?

Vulnerability in Oracle MySQL's MySQL Server component, affecting versions 5.7.18 and earlier
Easily exploitable by a highly privileged attacker with network access
Allows unauthorized manipulation leading to server hang or crash, causing denial of service

The Impact of CVE-2017-3638

CVSS 3.0 Base Score: 4.9 (impacts on availability)
Attack vector: (CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H)

Technical Details of CVE-2017-3638

Affecting Oracle MySQL Server versions 5.7.18 and earlier.

Vulnerability Description

Easily exploitable vulnerability in the Optimizer subcomponent
Allows a highly privileged attacker to compromise the MySQL Server

Affected Systems and Versions

Product: MySQL Server
Vendor: Oracle Corporation
Versions affected: 5.7.18 and earlier

Exploitation Mechanism

Attacker with network access through multiple protocols can exploit the vulnerability

Mitigation and Prevention

Steps to address the CVE-2017-3638 vulnerability.

Immediate Steps to Take

Apply vendor-provided patches and updates
Monitor network traffic for signs of exploitation
Restrict network access to vulnerable systems

Long-Term Security Practices

Regularly update and patch MySQL Server installations
Implement network segmentation to limit the attack surface

Patching and Updates

Stay informed about security advisories from Oracle and apply patches promptly