Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent:
Server: Optimizer). Supported versions that are affected are 5.5.58 and
prior, 5.6.38 and prior and 5.7.20 and prior. Easily exploitable
vulnerability allows low privileged attacker with network access via
multiple protocols to compromise MySQL Server. Successful attacks of this
vulnerability can result in unauthorized ability to cause a hang or
frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.0 Base
Score 6.5 (Availability impacts). CVSS Vector:
(CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).