Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent:
Server: Optimizer). Supported versions that are affected are 5.7.21 and
prior. Easily exploitable vulnerability allows high 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 as well as unauthorized update, insert or delete access to some of
MySQL Server accessible data. CVSS 3.0 Base Score 5.5 (Integrity and
Availability impacts). CVSS Vector:
(CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H).

mdeslaur

5.7 only