CVE-2021-45457 : Vulnerability Insights and Analysis

Apache Kylin allows cross-origin requests with credentials from any origin, impacting versions 2.6.6, 3.1.2, and 4.0.0.

Understanding CVE-2021-45457

Apache Kylin is affected by an overly broad Cross-Origin Resource Sharing (CORS) configuration vulnerability.

What is CVE-2021-45457?

This CVE involves Apache Kylin allowing cross-origin requests with credentials from any source, potentially leading to security risks.

The Impact of CVE-2021-45457

The vulnerability enables attackers to send malicious cross-origin requests with credentials, risking unauthorized access to sensitive data in affected versions of Apache Kylin.

Technical Details of CVE-2021-45457

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The issue stems from Apache Kylin's permission of cross-origin requests with credentials from any origin, exposing data to potential exploitation.

Affected Systems and Versions

Apache Kylin 2: <= 2.6.6
Apache Kylin 3: <= 3.1.2
Apache Kylin 4: <= 4.0.0

Exploitation Mechanism

Attackers can exploit the vulnerability by sending cross-origin requests with credentials, bypassing security measures and potentially compromising sensitive information.

Mitigation and Prevention

Protect your systems from CVE-2021-45457 by following the outlined strategies.

Immediate Steps to Take

Upgrade Kylin 2.x & 3.x to version 3.1.3
Upgrade Kylin 4.x to version 4.0.1
Apply patches from the provided URLs to mitigate the vulnerability.

Long-Term Security Practices

Implement strong CORS policies to restrict cross-origin requests
Regularly update Apache Kylin to the latest version to ensure enhanced security

Patching and Updates

Keep your Apache Kylin installation up to date with the latest patches to address security vulnerabilities effectively.