CVE-2020-24583 : Security Advisory and Response

An issue was discovered in Django 2.2 before 2.2.16, 3.0 before 3.0.10, and 3.1 before 3.1.1 (when Python 3.7+ is used) where FILE_UPLOAD_DIRECTORY_PERMISSIONS mode was not applied to intermediate-level directories created during file uploads and collectstatic management command.

Understanding CVE-2020-24583

This CVE highlights a security vulnerability in Django versions prior to 2.2.16, 3.0.10, and 3.1.1 when used with Python 3.7 or higher.

What is CVE-2020-24583?

This CVE identifies a flaw in Django that fails to apply FILE_UPLOAD_DIRECTORY_PERMISSIONS mode to certain directories, posing a security risk during file uploads and static file collection.

The Impact of CVE-2020-24583

The vulnerability could allow an attacker to manipulate or access files in directories where permissions were not correctly set, potentially leading to unauthorized access or data compromise.

Technical Details of CVE-2020-24583

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The issue arises from the failure to enforce FILE_UPLOAD_DIRECTORY_PERMISSIONS on intermediate directories created during file uploads and collectstatic operations.

Affected Systems and Versions

Django versions before 2.2.16, 3.0.10, and 3.1.1

Exploitation Mechanism

Attackers could exploit this vulnerability by manipulating files in directories where proper permissions were not applied, potentially leading to unauthorized access or data leakage.

Mitigation and Prevention

Protecting systems from CVE-2020-24583 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Django to versions 2.2.16, 3.0.10, or 3.1.1 to mitigate the vulnerability.
Review and adjust directory permissions to ensure proper access controls.

Long-Term Security Practices

Regularly monitor and audit file permissions and access controls.
Stay informed about security updates and best practices to prevent similar vulnerabilities.

Patching and Updates

Apply the latest security patches and updates provided by Django to address the vulnerability.