CVE-2020-21174 : Exploit Details and Defense Strategies

CVE-2020-21174 is a vulnerability in liufee CMS v.2.0.7.1 that allows a remote attacker to execute arbitrary code through a file upload vulnerability.

Understanding CVE-2020-21174

What is CVE-2020-21174?

The vulnerability in liufee CMS v.2.0.7.1 enables a remote attacker to execute arbitrary code by exploiting the image suffix function in file uploads.

The Impact of CVE-2020-21174

This vulnerability can lead to unauthorized code execution on the affected system, potentially resulting in data breaches, system compromise, and other security risks.

Technical Details of CVE-2020-21174

Vulnerability Description

The vulnerability arises from improper handling of file uploads in liufee CMS v.2.0.7.1, allowing attackers to upload malicious files and execute arbitrary code.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions Affected: v.2.0.7.1

Exploitation Mechanism

Attackers exploit the vulnerability by manipulating the image suffix function during file uploads, enabling them to upload and execute malicious code.

Mitigation and Prevention

Immediate Steps to Take

Disable file uploads in the affected system if not essential
Implement input validation to restrict file types and sizes
Monitor file upload activities for suspicious behavior

Long-Term Security Practices

Regularly update and patch the CMS and its components
Conduct security assessments and penetration testing
Educate users on safe file handling practices

Patching and Updates

Apply patches and updates provided by the CMS vendor to address the vulnerability and enhance system security.