CVE-2020-24186 Explained : Impact and Mitigation

A Remote Code Execution vulnerability exists in the gVectors wpDiscuz plugin 7.0 through 7.0.4 for WordPress, allowing unauthenticated users to upload any file type, including PHP files.

Understanding CVE-2020-24186

This CVE involves a critical vulnerability in the wpDiscuz plugin for WordPress that enables remote code execution.

What is CVE-2020-24186?

The vulnerability in the gVectors wpDiscuz plugin version 7.0 through 7.0.4 allows unauthenticated users to upload files, including potentially malicious PHP files, through the wmuUploadFiles AJAX action.

The Impact of CVE-2020-24186

The impact of this vulnerability is rated as critical with a CVSS base score of 10. It poses a high risk to confidentiality, integrity, and availability of affected systems.

Technical Details of CVE-2020-24186

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability allows unauthenticated users to upload any type of file, including PHP files, which can lead to remote code execution.

Affected Systems and Versions

gVectors wpDiscuz plugin versions 7.0 through 7.0.4 for WordPress

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: None
Scope: Changed
User Interaction: None
Vector String: CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:C/UI:N

Mitigation and Prevention

Protecting systems from this vulnerability requires immediate action and long-term security practices.

Immediate Steps to Take

Update the wpDiscuz plugin to the latest version to patch the vulnerability.
Monitor file uploads and restrict file types to prevent unauthorized uploads.

Long-Term Security Practices

Regularly update all plugins and themes to address security vulnerabilities.
Implement strong authentication mechanisms to prevent unauthorized access.

Patching and Updates

Apply security patches promptly to ensure protection against known vulnerabilities.