CVE-2021-45452 : Vulnerability Insights and Analysis
Learn about CVE-2021-45452 affecting Django versions pre 2.2.26, 3.2.11, and 4.0.1. Understand the impact, exploitation, and mitigation steps for this directory traversal vulnerability.
Storage.save in Django 2.2 before 2.2.26, 3.2 before 3.2.11, and 4.0 before 4.0.1 allows directory traversal if crafted filenames are directly passed to it.
Understanding CVE-2021-45452
Storage.save vulnerability in Django versions before specified releases.
What is CVE-2021-45452?
CVE-2021-45452 is a vulnerability in Django versions that permits directory traversal when maliciously crafted filenames are used with Storage.save.
The Impact of CVE-2021-45452
- Attackers can exploit this to traverse directories and potentially access unauthorized files.
Technical Details of CVE-2021-45452
Detailed technical aspects of the vulnerability.
Vulnerability Description
- Issue in Django versions allowing directory traversal via crafted filenames.
Affected Systems and Versions
- Django 2.2 before 2.2.26
- Django 3.2 before 3.2.11
- Django 4.0 before 4.0.1
Exploitation Mechanism
- Crafted filenames directly passed to Storage.save triggering directory traversal.
Mitigation and Prevention
Protective measures against CVE-2021-45452
Immediate Steps to Take
- Upgrade Django to versions 2.2.26, 3.2.11, or 4.0.1
- Avoid directly passing user input as filenames
Long-Term Security Practices
- Implement input validation to prevent malicious inputs
- Regular security audits of Django configurations
Patching and Updates
- Apply patches and updates provided by Django maintainers.