Improper input validation in MySQL Server - CVE-2020-14878

Vulnerability identifier: #VU47783

CSH Severity: High

CVSS v4: 8.6 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-14878

CWE-ID: CWE-20

Exploitation vector: Adjecent network

Exploit availability: No public exploit available

The vulnerability allows a remote authenticated user to execute arbitrary code.

The vulnerability exists due to improper input validation within the Server: Security: LDAP Auth component in MySQL Server. A remote authenticated user can exploit this vulnerability to execute arbitrary code.

MySQL Server
Gentoo Linux
Ubuntu
openEuler
mysql-server-5.7 (Ubuntu package)
mysql-server-8.0 (Ubuntu package)
mysql

Install updates from vendor's website.

MySQL Server - update to 8.0.22
mysql-server-5.7 (Ubuntu package) - addressed in versions 5.7.32-0ubuntu0.16.04.1, 5.7.32-0ubuntu0.18.04.1
mysql-server-8.0 (Ubuntu package) - addressed in versions 8.0.22-0ubuntu0.20.04.2, 8.0.22-0ubuntu0.20.10.2
mysql - update to 8.0.22-1

• https://www.oracle.com/security-alerts/cpuoct2020.html

• Multiple vulnerabilities in MySQL Server
• Gentoo update for MySQL
• openEuler 20.03 LTS update for mysql
• Ubuntu update for mysql-5.7