CVE-2020-20718 : Security Advisory and Response

A File Upload vulnerability in PluckCMS v.4.7.10 dev versions allows remote code execution via a crafted image file.

Understanding CVE-2020-20718

What is CVE-2020-20718?

The CVE-2020-20718 vulnerability is a File Upload security issue found in PluckCMS v.4.7.10 dev versions, enabling attackers to execute arbitrary code by manipulating the save_file() parameter.

The Impact of CVE-2020-20718

This vulnerability poses a severe risk as it allows remote attackers to compromise the affected system by uploading malicious image files.

Technical Details of CVE-2020-20718

Vulnerability Description

The vulnerability arises from improper handling of file uploads in PluckCMS v.4.7.10 dev versions, leading to the execution of unauthorized code.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions: All versions of PluckCMS v.4.7.10 dev are affected.

Exploitation Mechanism

Attackers can exploit this vulnerability by uploading a specially crafted image file to the save_file() parameter, triggering the execution of malicious code.

Mitigation and Prevention

Immediate Steps to Take

Disable file uploads in PluckCMS if not essential.
Implement input validation to restrict file types and sizes.
Regularly monitor and review uploaded files for suspicious content.

Long-Term Security Practices

Conduct regular security audits and penetration testing.
Educate users on safe file upload practices to prevent exploitation.

Patching and Updates

Apply patches or updates provided by PluckCMS to address the File Upload vulnerability.