CVE-2020-2893: 
MySQL vulnerability analysis and mitigation

CVE-2020-2893 is a vulnerability in the MySQL Server product of Oracle MySQL, specifically affecting the InnoDB component. The vulnerability affects MySQL versions 8.0.19 and prior. This easily exploitable vulnerability allows high privileged attackers with network access via multiple protocols to compromise MySQL Server (CVE Mitre).

The vulnerability has 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 attack requires network access and high privileges, but has low attack complexity and requires no user interaction (Oracle Security).

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 Security).

The vulnerability is considered easily exploitable but requires high privileges and network access via multiple protocols. The attacker must have valid authentication credentials to exploit this vulnerability (NetApp Security).

Oracle has released patches to address this vulnerability in MySQL version 8.0.20. Users are advised to upgrade to this version or later. Ubuntu users can update to mysql-server-8.0 version 8.0.20-0ubuntu0.20.04.1 for Ubuntu 20.04 and version 8.0.20-0ubuntu0.19.10.1 for Ubuntu 19.10 (Ubuntu Security).