CVE-2021-40964 : Exploit Details and Defense Strategies

A Path Traversal vulnerability in TinyFileManager up to version 2.4.6 allows attackers to upload malicious files onto the server.

Understanding CVE-2021-40964

This CVE vulnerability involves a critical flaw in TinyFileManager that can be exploited by attackers.

What is CVE-2021-40964?

The CVE-2021-40964 vulnerability is a Path Traversal issue in TinyFileManager versions up to 2.4.6. Attackers can upload files with path traversal strings, escaping the server's directory.

The Impact of CVE-2021-40964

The vulnerability enables attackers to upload malicious files to any directory on the server, compromising data and system integrity.

Technical Details of CVE-2021-40964

This section delves into specific technical aspects of the CVE.

Vulnerability Description

The flaw permits attackers to upload files containing path traversal strings to evade the server's directory restrictions.

Affected Systems and Versions

Product: TinyFileManager
Versions affected: Up to and including 2.4.6

Exploitation Mechanism

Attackers can leverage Admin credentials or CSRF vulnerability to upload files with path traversal strings, thereby bypassing directory restrictions.

Mitigation and Prevention

Protect systems from CVE-2021-40964 by following these mitigation strategies.

Immediate Steps to Take

Update TinyFileManager to a patched version.
Implement strong access controls to prevent unauthorized uploads.

Long-Term Security Practices

Conduct regular security audits to identify vulnerabilities.
Educate users and administrators on secure file uploading practices.

Patching and Updates

Regularly check for security patches and updates for TinyFileManager to address known vulnerabilities.