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Vulnerability DatabaseCVE-2021-2146

CVE-2021-2146: 
MySQL vulnerability analysis and mitigation

Overview

CVE-2021-2146 is a vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Options) affecting versions 5.7.33 and prior and 8.0.23 and prior. This vulnerability was disclosed in Oracle's April 2021 Critical Patch Update (Oracle CPU).

Technical details

The vulnerability has 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. The vulnerability is easily exploitable by a high privileged attacker with network access via multiple protocols (NVD).

Impact

Successful exploitation of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. The vulnerability only affects availability with no impact on confidentiality or integrity (Oracle CPU).

Mitigation and workarounds

Oracle released patches for affected versions in their April 2021 Critical Patch Update. Users should upgrade MySQL Server to versions after 5.7.33 or 8.0.23 depending on their installation branch. Multiple Linux distributions including Fedora have also released updated packages to address this vulnerability (Fedora Update).

Additional resources

Source: This report was generated using AI

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