CVE-2018-20604 : Exploit Details and Defense Strategies

Lei Feng TV CMS version 3.8.6, also known as LFCMS, is vulnerable to Directory Traversal, allowing attackers to read sensitive files on the system.

Understanding CVE-2018-20604

This CVE involves a specific vulnerability in Lei Feng TV CMS version 3.8.6 that enables Directory Traversal attacks.

What is CVE-2018-20604?

The vulnerability in Lei Feng TV CMS version 3.8.6, also known as LFCMS, allows attackers to exploit Directory Traversal by manipulating URIs in the Template/edit/path.

The Impact' Impact of CVE-2018-20604

By using a specific sequence in the URIs, attackers can read sensitive files on the system, potentially leading to unauthorized access to critical information.

Technical Details of CVE-2018-20604

Lei Feng TV CMS version 3.8.6 is susceptible to a Directory Traversal vulnerability, as demonstrated by the admin.php?s=/Template/edit/path/web......*..*1.txt.html URI.

Vulnerability Description

The vulnerability arises from the improper handling of user input in URIs, allowing attackers to traverse directories and access files outside the intended directory structure.

Affected Systems and Versions

Product: Lei Feng TV CMS (LFCMS)
Version: 3.8.6

Exploitation Mechanism

Attackers can exploit this vulnerability by inserting the specific sequence "..*" in the URIs of Template/edit/path, as demonstrated in the provided example URI.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2018-20604.

Immediate Steps to Take

Implement input validation to prevent malicious input in URIs.
Regularly monitor and analyze system logs for any suspicious activities.
Consider implementing access controls to restrict unauthorized access to sensitive files.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and address vulnerabilities.
Stay informed about security updates and patches released by the software vendor.

Patching and Updates

Apply patches or updates provided by Lei Feng TV CMS to address the Directory Traversal vulnerability and enhance system security.