Improper input validation in MySQL Server - CVE-2023-21873

Vulnerability identifier: #VU71278

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-2023-21873

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

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: Optimizer component in MySQL Server. A remote privileged user can exploit this vulnerability to perform a denial of service (DoS) attack.

MySQL Server
Isolation Segment
Anolis OS
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
Ubuntu
openEuler
Fedora
IBM Security Guardium
mecab
mecab-ipadic
mecab-ipadic-EUCJP
mysql-server-5.7 (Ubuntu package)
mysql-server-8.0 (Ubuntu package)
rh-mysql80-mysql (Red Hat package)
mysql (Red Hat package)
community-mysql
mysql-server
mysql-libs
mysql-errmsg
mysql-devel
mysql-common
mysql
mysql-test
mysql-help
mysql-debuginfo
mysql-debugsource
mysql-config

Install updates from vendor's website.

MySQL Server - update to 8.0.32
mecab - update to 0.996-2
mecab-ipadic - update to 2.7.0.20070801-16.0.1
mecab-ipadic-EUCJP - update to 2.7.0.20070801-16.0.1
mysql-server-5.7 (Ubuntu package) - update to 5.7.41-0ubuntu0.18.04.1
mysql-server-8.0 (Ubuntu package) - addressed in versions 8.0.32-0buntu0.20.04.1, 8.0.32-0buntu0.22.04.1, 8.0.32-0buntu0.22.10.1
rh-mysql80-mysql (Red Hat package) - update to 8.0.32-1.el7
mysql (Red Hat package) - update to 8.0.32-1.el9_2
community-mysql - addressed in versions 8.0.32-1.fc36, 8.0.32-1.fc37
mysql-server - update to 8.0.32-1.0.1
mysql-libs - update to 8.0.32-1.0.1
mysql-errmsg - update to 8.0.32-1.0.1
mysql-devel - update to 8.0.32-1.0.1
mysql-common - update to 8.0.32-1.0.1
mysql - update to 8.0.32-1.0.1
mysql-test - update to 8.0.32-1.0.1
mysql-devel - addressed in versions 8.0.35-1, 8.0.38-1
mysql-help - addressed in versions 8.0.35-1, 8.0.38-1
mysql-test - addressed in versions 8.0.35-1, 8.0.38-1
mysql-libs - addressed in versions 8.0.35-1, 8.0.38-1
mysql-debuginfo - addressed in versions 8.0.35-1, 8.0.38-1
mysql-server - addressed in versions 8.0.35-1, 8.0.38-1
mysql-debugsource - addressed in versions 8.0.35-1, 8.0.38-1
mysql-errmsg - addressed in versions 8.0.35-1, 8.0.38-1
mysql-config - addressed in versions 8.0.35-1, 8.0.38-1
mysql-common - addressed in versions 8.0.35-1, 8.0.38-1
mysql - addressed in versions 8.0.35-1, 8.0.38-1
mysql - addressed in versions 8.0-3720230907003352.9e842022, 8.0-3820230907003352.75741a8b

• https://www.oracle.com/security-alerts/cpujan2023.html

• Multiple vulnerabilities in MySQL Server
• Ubuntu update for mysql-5.7
• Red Hat Software Collections update for rh-mysql80-mysql
• Multiple vulnerabilities in IBM Security Guardium
• Red Hat Enterprise Linux 9 update for mysql
• Red Hat Enterprise Linux 8 update for the mysql:8.0 module
• VMware Tanzu Isolation Segment update for MySQL
• Fedora 36 update for community-mysql
• Fedora 37 update for community-mysql
• Fedora 37 Modular update for mysql
• Fedora 38 Modular update for mysql
• openEuler 22.03 LTS SP1 update for mysql
• openEuler 22.03 LTS SP2 update for mysql
• openEuler 22.03 LTS update for mysql
• openEuler 20.03 LTS SP4 update for mysql
• Anolis OS update for mysql:8.0 module