CVE-2021-46665 : What You Need to Know

MariaDB through 10.5.9 allows a sql_parse.cc application crash due to incorrect used_tables expectations.

Understanding CVE-2021-46665

MariaDB is vulnerable to an application crash that can be triggered by incorrect expectations related to used_tables in the sql_parse.cc component.

What is CVE-2021-46665?

This CVE describes a vulnerability in MariaDB versions up to 10.5.9 that can lead to an application crash in the sql_parse.cc file.

The Impact of CVE-2021-46665

The vulnerability can result in a denial of service (DoS) condition where the application crashes, potentially disrupting services relying on the affected MariaDB instance.

Technical Details of CVE-2021-46665

In-depth technical information about the CVE.

Vulnerability Description

The issue arises from incorrect used_tables expectations within the sql_parse.cc file, leading to a crash.

Affected Systems and Versions

Product: MariaDB
Versions: up to 10.5.9

Exploitation Mechanism

The vulnerability can be exploited by crafting a specific query that triggers the incorrect handling of used_tables, leading to a crash.

Mitigation and Prevention

Steps to address and prevent the exploitation of the vulnerability.

Immediate Steps to Take

Update MariaDB to version 10.5.10 or later to patch the vulnerability.
Monitor vendor security advisories for any updates or patches.
Employ network security measures to minimize the risk of exploitation.

Long-Term Security Practices

Regularly update and patch MariaDB and other software components.
Conduct regular security assessments and penetration testing to identify vulnerabilities.
Implement proper access controls and least privilege principles to limit potential attack surfaces.

Patching and Updates

Apply patches provided by MariaDB promptly to ensure that the vulnerability is mitigated and the system is secure.