CVE-2020-14641: 
MySQL vulnerability analysis and mitigation

CVE-2020-14641 is a security vulnerability affecting the MySQL Server product of Oracle MySQL, specifically in the Server: Security: Roles component. The vulnerability affects MySQL versions 8.0.20 and prior. This vulnerability was disclosed as part of Oracle's July 2020 Critical Patch Update (Oracle CPU).

The vulnerability is classified as an easily exploitable vulnerability that allows high privileged attackers 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) with the following vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N (NVD).

Successful exploitation of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Server accessible data. The vulnerability primarily affects the confidentiality of the system, with no direct impact on integrity or availability (Oracle CPU).

The vulnerability is considered easily exploitable and requires a high-privileged attacker with network access. The attack can be conducted via multiple protocols, though specific exploit details have not been publicly disclosed (NVD).

Oracle has released patches to address this vulnerability in MySQL version 8.0.21. Users are strongly recommended to update to this version or later. For Ubuntu users, MySQL has been updated to version 8.0.21 in Ubuntu 20.04 LTS. For Red Hat users, patches are available through the standard update channels (Ubuntu Notice).