Improper input validation in MySQL Server - CVE-2020-14812

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Main Vulnerability Database Vulnerabilities #VU47802

Improper input validation in MySQL Server - CVE-2020-14812

Published: October 21, 2020


Vulnerability identifier: #VU47802
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-14812
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote privileged user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the Server: Locking component in MySQL Server. A remote privileged user can exploit this vulnerability to perform a denial of service (DoS) attack.


Affected software

MySQL Server
Gentoo Linux
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Anolis OS
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux Server - AUS
Ubuntu
openEuler
Fedora
Red Hat Software Collections
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
rh-mysql80-mysql (Red Hat package)
mariadb (Alpine package)
mecab
mecab-ipadic-EUCJP
mecab-ipadic
mariadb-connector-c
mysql-server-5.7 (Ubuntu package)
mysql-server-8.0 (Ubuntu package)
mysql
mysql-common
mysql-devel
mysql-errmsg
mysql-libs
mysql-server
mysql-test
mariadb
rh-mariadb103-mariadb (Red Hat package)
rh-mariadb103-galera (Red Hat package)
galera

How to mitigate CVE-2020-14812

Install updates from vendor's website.

MySQL Server - addressed in versions 5.6.50, 5.7.32, 8.0.22
rh-mysql80-mysql (Red Hat package) - update to 8.0.26-1.el7
mariadb (Alpine package) - update to 10.5.8-r0
mecab - update to 0.996-1
mecab-ipadic-EUCJP - update to 2.7.0.20070801-16.0.1
mecab-ipadic - update to 2.7.0.20070801-16.0.1
mariadb-connector-c - addressed in versions 3.1.11-1.fc31, 3.1.11-1.fc32, 3.1.11-1.fc33
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
mysql-common - update to 8.0.26-1.0.1
mysql-devel - update to 8.0.26-1.0.1
mysql-errmsg - update to 8.0.26-1.0.1
mysql-libs - update to 8.0.26-1.0.1
mysql-server - update to 8.0.26-1.0.1
mysql-test - update to 8.0.26-1.0.1
mysql - update to 8.0.26-1.0.1
mariadb - addressed in versions 10.3.26-1.fc31, 10.3-3120201105020028.f636be4b, 10.3-3120201106115457.f636be4b, 10.3-3220201106115457.43bbeeef, 10.3-3220201112123416.43bbeeef, 10.3-3320201106115457.601d93de, 10.3-3320201112123416.601d93de, 10.4.16-1.fc32, 10.4.16-1.fc33, 10.4-3120201105044233.f636be4b, 10.4-3120201112123346.f636be4b, 10.4-3220201105044233.43bbeeef, 10.4-3220201112123346.43bbeeef, 10.4-3320201105044233.601d93de, 10.4-3320201112123346.601d93de
rh-mariadb103-mariadb (Red Hat package) - update to 10.3.27-1.el7
rh-mariadb103-galera (Red Hat package) - update to 25.3.31-1.el7
galera - addressed in versions 25.3.31-1.fc31, 26.4.6-1.fc32, 26.4.6-1.fc33

External References

Related Security Bulletins