CVE-2022-33913 : Security Advisory and Response

In Mahara 21.04 before 21.04.6, 21.10 before 21.10.4, and 22.04.2, files can sometimes be downloaded through thumb.php with no permission check.

Understanding CVE-2022-33913

This CVE identifies a security vulnerability in Mahara versions that could allow unauthorized file downloads.

What is CVE-2022-33913?

The vulnerability in Mahara versions 21.04 before 21.04.6, 21.10 before 21.10.4, and 22.04.2 enables files to be downloaded via thumb.php without proper permission checks.

The Impact of CVE-2022-33913

This vulnerability could be exploited by attackers to download sensitive files without authorization, potentially leading to data leakage and unauthorized access.

Technical Details of CVE-2022-33913

The technical details of this CVE include:

Vulnerability Description

Files can be downloaded through thumb.php in Mahara versions without undergoing necessary permission validation.

Affected Systems and Versions

Mahara 21.04 before 21.04.6
Mahara 21.10 before 21.10.4
Mahara 22.04.2

Exploitation Mechanism

Attackers can exploit the vulnerability by utilizing thumb.php to retrieve files without proper authorization checks.

Mitigation and Prevention

To address CVE-2022-33913, consider the following:

Immediate Steps to Take

Upgrade Mahara to version 21.04.6, 21.10.4, or 22.04.2 that contain fixes for this vulnerability.
Monitor file download activities for any unauthorized access.

Long-Term Security Practices

Implement regular security audits to identify and address potential vulnerabilities.
Educate users on file access permissions and best practices for file sharing.

Patching and Updates

Always apply the latest patches and updates released by Mahara to ensure your system is protected against known vulnerabilities.