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Vulnerability DatabaseCVE-2021-2169

CVE-2021-2169: 
MySQL vulnerability analysis and mitigation

Overview

CVE-2021-2169 is a vulnerability in the MySQL Server product of Oracle MySQL, specifically affecting the Server: Optimizer component. The vulnerability affects MySQL versions 5.7.33 and prior, and 8.0.23 and prior. It was disclosed in April 2021 as part of Oracle's Critical Patch Update (Oracle CPU).

Technical details

This is an easily exploitable vulnerability that requires a high-privileged attacker with network access via multiple protocols to compromise MySQL Server. The vulnerability has been assigned a CVSS 3.1 Base Score of 4.9 (Medium severity) with the following vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H (NVD).

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 (NVD).

Mitigation and workarounds

Oracle has released patches for affected versions in MySQL versions after 5.7.33 and 8.0.23. Users are strongly recommended to update to the patched versions. The fix was included in the April 2021 Critical Patch Update (Oracle CPU, NetApp Advisory).

Additional resources

Source: This report was generated using AI

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