CVE-2020-13384 : Exploit Details and Defense Strategies

Monstra CMS 3.0.4 allows remote authenticated users to upload and execute arbitrary PHP code via admin/index.php?id=filesmanager due to a vulnerability that allows .php7 filenames to bypass restrictions.

Understanding CVE-2020-13384

This CVE identifies a security flaw in Monstra CMS 3.0.4 that enables authenticated users to execute PHP code through a specific URL.

What is CVE-2020-13384?

The vulnerability in Monstra CMS 3.0.4 permits authenticated users to upload and run PHP code by exploiting a loophole in filename restrictions.

The Impact of CVE-2020-13384

The vulnerability allows attackers to execute arbitrary PHP code, potentially leading to unauthorized access, data theft, and system compromise.

Technical Details of CVE-2020-13384

This section delves into the specifics of the vulnerability.

Vulnerability Description

Monstra CMS 3.0.4's flaw enables authenticated users to bypass filename restrictions, allowing the execution of PHP code.

Affected Systems and Versions

Product: Monstra CMS 3.0.4
Vendor: N/A
Version: N/A

Exploitation Mechanism

The vulnerability arises from the failure to block .php7 filenames, enabling users to upload and execute PHP code.

Mitigation and Prevention

Protecting systems from CVE-2020-13384 requires immediate action and long-term security measures.

Immediate Steps to Take

Update Monstra CMS to the latest version to patch the vulnerability.
Implement strict file upload restrictions to prevent malicious uploads.
Monitor file uploads for suspicious activity.

Long-Term Security Practices

Regularly audit and update security configurations.
Educate users on safe upload practices and potential risks.
Conduct security assessments to identify and address vulnerabilities.
Employ web application firewalls to filter and block malicious traffic.

Patching and Updates

Apply security patches promptly to address known vulnerabilities and enhance system security.