CVE-2021-46663 : Security Advisory and Response
Learn about CVE-2021-46663, a vulnerability in MariaDB up to version 10.5.13 that allows an application crash via specific SELECT statements, its impact, and mitigation steps.
MariaDB through 10.5.13 allows a ha_maria::extra application crash via certain SELECT statements.
Understanding CVE-2021-46663
MariaDB version 10.5.13 and prior are vulnerable to an application crash due to specific SELECT statements triggering the issue.
What is CVE-2021-46663?
CVE-2021-46663 pertains to a vulnerability in MariaDB that could be exploited to cause a crash in the ha_maria::extra application when executing particular SELECT commands.
The Impact of CVE-2021-46663
The vulnerability can be abused to disrupt the availability of the MariaDB database, potentially leading to denial of service (DoS) attacks affecting systems utilizing the affected versions.
Technical Details of CVE-2021-46663
The technical details shed light on the nature of the vulnerability and its implications on systems running vulnerable MariaDB versions.
Vulnerability Description
The vulnerability in MariaDB through version 10.5.13 triggers an application crash in ha_maria::extra when processing specific SELECT statements.
Affected Systems and Versions
- Product: MariaDB
- Vendor: MariaDB
- Versions: up to 10.5.13
Exploitation Mechanism
Exploiting this vulnerability involves crafting and executing malicious SELECT statements to trigger the application crash in ha_maria::extra within MariaDB.
Mitigation and Prevention
Addressing CVE-2021-46663 requires immediate actions to mitigate the risk and prevent potential exploitation.
Immediate Steps to Take
- Consider upgrading MariaDB to a non-affected version or applying patches provided by the vendor.
- Monitor for any abnormal database behavior that could indicate exploitation attempts.
Long-Term Security Practices
- Regularly update and patch MariaDB installations to protect against known vulnerabilities.
- Employ network controls and access restrictions to limit exposure to potential attackers.
Patching and Updates
Stay informed about security updates from MariaDB and promptly apply patches to address CVE-2021-46663 and other vulnerabilities.