CVE-2021-27644 : Exploit Details and Defense Strategies

A SQL injection vulnerability in Apache DolphinScheduler before version 1.3.6 allows authorized users to exploit the data source center, specifically affecting MySQL data sources with internal login account passwords.

Understanding CVE-2021-27644

This CVE concerns a security issue in Apache DolphinScheduler related to SQL injection in the data source center.

What is CVE-2021-27644?

In Apache DolphinScheduler before 1.3.6, authorized users can exploit a SQL injection vulnerability in the data source center, impacting MySQL data sources with internal login account passwords.

The Impact of CVE-2021-27644

The vulnerability allows attackers to execute remote code by manipulating the MySQL JDBC connector parameters. The severity of the impact is classified as low.

Technical Details of CVE-2021-27644

This section provides specific technical details of the CVE.

Vulnerability Description

The vulnerability in Apache DolphinScheduler before 1.3.6 enables authorized users to conduct SQL injection attacks in the data source center, focusing on MySQL data sources with internal login account passwords.

Affected Systems and Versions

The vulnerability affects versions of Apache DolphinScheduler prior to 1.3.6 and impacts MySQL data sources with internal login account passwords.

Exploitation Mechanism

Authorized users can leverage the SQL injection vulnerability in the data source center to manipulate MySQL data sources with internal login account passwords.

Mitigation and Prevention

To address CVE-2021-27644 and enhance system security, consider the following measures.

Immediate Steps to Take

Upgrade Apache DolphinScheduler to version 1.3.6 or later to mitigate the SQL injection vulnerability.
Regularly monitor and audit MySQL data sources to detect any unusual activities that may indicate exploitation.

Long-Term Security Practices

Enforce strong password policies and credentials management to prevent unauthorized access to MySQL data sources.
Implement network segmentation to limit the impact of potential security breaches.

Patching and Updates

Stay informed about security updates and patches released by Apache Software Foundation for DolphinScheduler to address vulnerabilities and enhance system security.