Improper input validation in MySQL Server - CVE-2020-14553

Vulnerability identifier: #VU30110

CSH Severity: Low

CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-14553

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote authenticated user to manipulate data.

The vulnerability exists due to improper input validation within the Server: Pluggable Auth component in MySQL Server. A remote authenticated user can exploit this vulnerability to manipulate data.

MySQL Server
Amazon Linux AMI
Gentoo Linux
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Ubuntu
openEuler
Fedora
rh-mysql80-mysql (Red Hat package)
mysql-server-5.7 (Ubuntu package)
mysql-server-8.0 (Ubuntu package)
mysql
community-mysql

Install updates from vendor's website.

MySQL Server - update to 5.7.31
rh-mysql80-mysql (Red Hat package) - update to 8.0.21-1.el7
mysql-server-5.7 (Ubuntu package) - addressed in versions 5.7.31-0ubuntu0.16.04.1, 5.7.31-0ubuntu0.18.04.1
mysql-server-8.0 (Ubuntu package) - update to 8.0.21-0ubuntu0.20.04.3
mysql - update to 8.0.21-2
community-mysql - addressed in versions 8.0.21-11.fc31, 8.0.21-11.fc32, 8.0.21-11.fc33
mysql - addressed in versions 8.0-3120200902143940.f636be4b, 8.0-3220200902143940.43bbeeef

• https://www.oracle.com/security-alerts/cpujul2020.html

• Multiple vulnerabilities in MySQL Server
• Red Hat Software Collections update for rh-mysql80-mysql
• Amazon Linux AMI update for mysql57
• Gentoo update for MySQL
• openEuler 20.03 LTS update for mysql-8.0.18-2
• Ubuntu update for mysql-5.7
• Red Hat Enterprise Linux 8 update for the mysql:8.0 module
• Red Hat Enterprise Linux 8 update for the mysql:8.0 module
• Fedora 32 Modular update for mysql
• Fedora 31 Modular update for mysql
• Fedora 31 update for community-mysql
• Fedora 33 update for community-mysql
• Fedora 32 update for community-mysql