Improper input validation in MySQL Server - CVE-2020-14586

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Main Vulnerability Database Vulnerabilities #VU30106

Improper input validation in MySQL Server - CVE-2020-14586

Published: July 16, 2020


Vulnerability identifier: #VU30106
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-2020-14586
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: Security: Privileges 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 ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for x86_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 Power, little endian - 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

How to mitigate CVE-2020-14586

Install updates from vendor's website.

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

External References

Related Security Bulletins