CVE-2020-18114 : Exploit Details and Defense Strategies

An arbitrary file upload vulnerability in the /uploads/dede component of DedeCMS V5.7SP2 allows attackers to upload a webshell in HTM format.

Understanding CVE-2020-18114

This CVE involves a critical arbitrary file upload vulnerability in DedeCMS V5.7SP2, enabling malicious actors to upload malicious webshells.

What is CVE-2020-18114?

The CVE-2020-18114 vulnerability pertains to an arbitrary file upload flaw in the /uploads/dede component of DedeCMS V5.7SP2, which can be exploited by attackers to upload a webshell in HTM format.

The Impact of CVE-2020-18114

Attackers can upload malicious webshells, potentially leading to unauthorized access, data theft, and further exploitation of the affected system.

Technical Details of CVE-2020-18114

This section provides technical insights into the vulnerability.

Vulnerability Description

The vulnerability allows unauthorized users to upload malicious webshells in HTM format to the /uploads/dede component of DedeCMS V5.7SP2.

Affected Systems and Versions

Product: DedeCMS
Version: 5.7SP2

Exploitation Mechanism

Attackers exploit the vulnerability by uploading a webshell in HTM format to the /uploads/dede component, gaining unauthorized access.

Mitigation and Prevention

Protecting systems from CVE-2020-18114 is crucial to prevent exploitation and unauthorized access.

Immediate Steps to Take

Disable file uploads in the /uploads/dede component.
Implement input validation to restrict file types that can be uploaded.
Regularly monitor the system for any unauthorized file uploads.

Long-Term Security Practices

Keep DedeCMS V5.7SP2 updated with the latest security patches.
Conduct regular security audits and penetration testing to identify and address vulnerabilities.

Patching and Updates

Apply patches and updates provided by DedeCMS to fix the arbitrary file upload vulnerability.