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Vulnerability DatabaseCVE-2020-2904

CVE-2020-2904: 
MySQL vulnerability analysis and mitigation

Overview

CVE-2020-2904 is a vulnerability discovered in the MySQL Server product of Oracle MySQL, specifically affecting the Server Optimizer component. The vulnerability affects MySQL versions 8.0.19 and prior. This security issue was disclosed as part of Oracle's Critical Patch Update in April 2020 (Oracle CPU).

Technical details

The vulnerability has been assigned a CVSS 3.0 Base Score of 4.9 (Medium severity) with the following vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H. The vulnerability requires network access via multiple protocols and high privileges to exploit (NVD, NetApp Advisory).

Impact

Successful exploitation of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash, leading to a complete Denial of Service (DoS) of MySQL Server. The vulnerability affects availability but does not impact confidentiality or integrity (Oracle CPU, NVD).

Mitigation and workarounds

Oracle has released patches to address this vulnerability in MySQL version 8.0.20. Ubuntu has provided security updates for affected versions: MySQL 8.0.20-0ubuntu0.20.04.1 for Ubuntu 20.04 LTS and MySQL 8.0.20-0ubuntu0.19.10.1 for Ubuntu 19.10. Users are strongly advised to update to these patched versions (Ubuntu Notice).

Additional resources

Source: This report was generated using AI

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