Improper input validation in MySQL Server - CVE-2021-2042

Vulnerability identifier: #VU49839

CSH Severity: Low

CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-2042

CWE-ID: CWE-20

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local privileged user to gain access to sensitive information.

The vulnerability exists due to improper input validation within the InnoDB component in MySQL Server. A local privileged user can exploit this vulnerability to gain access to sensitive information.

MySQL Server
Gentoo Linux
Anolis OS
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Server - TUS
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 - AUS
openEuler
Red Hat Software Collections
rh-mysql80-mysql (Red Hat package)
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
mecab
mecab-ipadic
mecab-ipadic-EUCJP
mysql
mysql-common
mysql-devel
mysql-errmsg
mysql-libs
mysql-server
mysql-test

Install updates from vendor's website.

MySQL Server - update to 8.0.22
rh-mysql80-mysql (Red Hat package) - update to 8.0.26-1.el7
mecab - update to 0.996-1
mecab-ipadic - update to 2.7.0.20070801-16.0.1
mecab-ipadic-EUCJP - update to 2.7.0.20070801-16.0.1
mysql - update to 8.0.22-3
mysql - update to 8.0.26-1.0.1
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

• https://www.oracle.com/security-alerts/cpujan2021.html

• Multiple vulnerabilities in MySQL Server
• Gentoo update for MySQL
• Red Hat Enterprise Linux 8.4 update for the mysql:8.0 module
• Red Hat Software Collections update for rh-mysql80-mysql
• openEuler 20.03 LTS update for mysql
• Anolis OS update for mysql:8.0 module