Improper input validation in MySQL Server - CVE-2020-14771

Vulnerability identifier: #VU47831

CSH Severity: Low

CVSS v4: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-14771

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote privileged user to perform service disruption.

The vulnerability exists due to improper input validation within the Server: Security: LDAP Auth component in MySQL Server. A remote privileged user can exploit this vulnerability to perform service disruption.

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 - addressed in versions 5.7.32, 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