CVE-2021-41265 : What You Need to Know

Flask-AppBuilder prior to version 3.3.4 is vulnerable to improper authentication in the REST API, allowing malicious actors to gain unauthorized access to protected endpoints.

Understanding CVE-2021-41265

Flask-AppBuilder contains a security vulnerability that affects the authentication mechanism in the REST API.

What is CVE-2021-41265?

Flask-AppBuilder, a Flask-based development framework, before version 3.3.4, has an inadequate authentication vulnerability in the REST API, enabling unauthorized access.

The Impact of CVE-2021-41265

CVSS Base Score: 8.1 (High)
Attack Vector: Network
Confidentiality Impact: High
Integrity Impact: High
This vulnerability allows attackers to authenticate and access protected REST API endpoints without proper authorization.

Technical Details of CVE-2021-41265

Flask-AppBuilder's security flaw is detailed below.

Vulnerability Description

The vulnerability lies in the improper authentication implementation of Flask-AppBuilder's REST API.

Affected Systems and Versions

Affected Product: Flask-AppBuilder
Vendor: dpgaspar
Vulnerable Versions: < 3.3.4

Exploitation Mechanism

Attackers can exploit this vulnerability through crafted requests to the REST API.

Mitigation and Prevention

To secure systems from CVE-2021-41265, follow the steps below.

Immediate Steps to Take

Upgrade Flask-AppBuilder to version 3.3.4 as a fix.

Long-Term Security Practices

Implement multi-factor authentication for added security.
Regularly review and update access control policies.
Conduct security training for developers and administrators.

Patching and Updates

Stay informed about security advisories and promptly apply patches issued by the software vendor.