CVE-2020-21590 : What You Need to Know

WUZHI CMS 4.1.0 is affected by a directory traversal vulnerability that allows attackers to list files in arbitrary directories.

Understanding CVE-2020-21590

What is CVE-2020-21590?

This CVE refers to a directory traversal vulnerability in WUZHI CMS 4.1.0, enabling attackers to view files in unauthorized directories.

The Impact of CVE-2020-21590

The vulnerability permits attackers to access sensitive files and potentially escalate their attack by gathering information from directories.

Technical Details of CVE-2020-21590

Vulnerability Description

The issue exists in coreframe/app/template/admin/index.php in WUZHI CMS 4.1.0, allowing malicious actors to manipulate the 'dir' parameter to view files outside the intended directory.

Affected Systems and Versions

Affected Version: WUZHI CMS 4.1.0

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting specific directory traversal payloads to access files in directories they should not have permission to view.

Mitigation and Prevention

Immediate Steps to Take

Implement input validation to sanitize user-controlled input, preventing directory traversal attacks.
Regularly monitor and review file access logs for any suspicious activities.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and address vulnerabilities proactively.
Educate developers and administrators on secure coding practices to prevent similar issues in the future.
Stay informed about security updates and patches released by WUZHI CMS.