Improper input validation in MySQL Server - CVE-2021-2356

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Main Vulnerability Database Vulnerabilities #VU55065

Improper input validation in MySQL Server - CVE-2021-2356

Published: July 20, 2021


Vulnerability identifier: #VU55065
CSH Severity: Medium
CVSS v4: 6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-2356
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote authenticated user to damange or delete data.

The vulnerability exists due to improper input validation within the Server: Replication component in MySQL Server. A remote authenticated user can exploit this vulnerability to damange or delete data.


Affected software

MySQL Server
Amazon Linux AMI
Anolis OS
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Ubuntu
openEuler
Fedora
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-EUCJP
mecab-ipadic
mysql-server-5.7 (Ubuntu package)
mysql5-server
mysql5-libs
mysql5-errmsg
mysql5-embedded-devel
mysql5-embedded
mysql5-devel
mysql5-debugsource
mysql5-debuginfo
mysql5-common
mysql5
mysql5-test
mysql-server-8.0 (Ubuntu package)
mysql
community-mysql
mysql-common
mysql-devel
mysql-errmsg
mysql-libs
mysql-server
mysql-test

How to mitigate CVE-2021-2356

Install updates from vendor's website.

MySQL Server - addressed in versions 5.7.35, 8.0.26
rh-mysql80-mysql (Red Hat package) - update to 8.0.26-1.el7
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
mysql-server-5.7 (Ubuntu package) - update to 5.7.35-0ubuntu0.18.04.1
mysql5-server - update to 5.7.37-1
mysql5-libs - update to 5.7.37-1
mysql5-errmsg - update to 5.7.37-1
mysql5-embedded-devel - update to 5.7.37-1
mysql5-embedded - update to 5.7.37-1
mysql5-devel - update to 5.7.37-1
mysql5-debugsource - update to 5.7.37-1
mysql5-debuginfo - update to 5.7.37-1
mysql5-common - update to 5.7.37-1
mysql5 - update to 5.7.37-1
mysql5-test - update to 5.7.37-1
mysql-server-8.0 (Ubuntu package) - addressed in versions 8.0.26-0ubuntu0.20.04.2, 8.0.26-0ubuntu0.21.04.3
mysql - update to 8.0.26-1
community-mysql - addressed in versions 8.0.26-1.fc33, 8.0.26-1.fc34
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
mysql - addressed in versions 8.0-3320210817160118.601d93de, 8.0-3420210817160118.058368ca

External References

Related Security Bulletins