Resource exhaustion in MariaDB - CVE-2021-46657

Vulnerability identifier: #VU63849

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2021-46657

CWE-ID: CWE-400

Exploitation vector: Local access

Exploit availability: No public exploit available

Affected software:
MariaDB
SUSE CaaS Platform
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
SUSE Enterprise Storage
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Anolis OS
Red Hat Enterprise Linux Server - AUS
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 Server - TUS
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
SUSE Linux Enterprise High Performance Computing
SUSE Linux Enterprise Server
SUSE Linux Enterprise Server for SAP
SUSE Linux Enterprise Realtime Extension
SUSE Linux Enterprise Module for Server Applications
SUSE Linux Enterprise Server for SAP Applications
openSUSE Leap
openEuler
Fedora
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions
Judy
Judy-devel
asio-devel
libmysqld19-debuginfo
mariadb-errormessages
mariadb-tools-debuginfo
mariadb-tools
mariadb-debugsource
mariadb-debuginfo
mariadb-client-debuginfo
mariadb-client
mariadb
libmysqld19
libmysqld-devel
mariadb-test
mariadb-gssapi-server
mariadb-oqgraph-engine
mariadb-server
mariadb-errmsg
mariadb-embedded-devel
mariadb-embedded
mariadb-devel
mariadb-common
mariadb-backup
mariadb-server-utils
mariadb-server-galera
rh-mariadb103-mariadb (Red Hat package)
mariadb-cracklib
mariadb-errmessage
libmariadbd-devel
libmariadbd19
libmariadbd19-debuginfo
mariadb-pam
rh-mariadb105-mariadb (Red Hat package)
mariadb-galera
mariadb-bench
mariadb-bench-debuginfo
mariadb-rpm-macros
mariadb-test-debuginfo
galera
rh-mariadb103-galera (Red Hat package)
rh-mariadb105-galera (Red Hat package)

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

The vulnerability exists due to application does not properly control consumption of internal resources when processing certain subquery uses of ORDER BY. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Install updates from vendor's website.

• https://jira.mariadb.org/browse/MDEV-25629
• https://security.netapp.com/advisory/ntap-20220221-0002/
• https://mariadb.com/kb/en/security/
• https://bugzilla.redhat.com/show_bug.cgi?id=2049305