CVE-2018-20868 : Security Advisory and Response

The WHM MultiPHP Manager interface in cPanel versions prior to 76.0.8 has a vulnerability known as Stored XSS (Cross-Site Scripting) (SEC-464).

Understanding CVE-2018-20868

This CVE identifies a Stored XSS vulnerability in cPanel versions before 76.0.8, specifically in the WHM MultiPHP Manager interface.

What is CVE-2018-20868?

cPanel versions earlier than 76.0.8 are susceptible to a Stored XSS issue within the WHM MultiPHP Manager interface, identified as SEC-464.

The Impact of CVE-2018-20868

The vulnerability could allow an attacker to execute malicious scripts in the context of a user's session, potentially leading to unauthorized actions or data theft.

Technical Details of CVE 2018-20868

The technical facades of the CVE are as follows:

Vulnerability Description

The vulnerability involves Stored XSS in the WHM MultiPHP Manager interface of cPanel versions preceding 76.0.8.

Affected Systems and Versions

Product: cPanel
Vendor: cPanel
Versions Affected: All versions before 76.0.8

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into input fields within the WHM MultiPHP Manager interface.

Mitigation and Prevention

Protect your systems with the following measures:

Immediate Steps to Take

Update cPanel to version 76.0.8 or later to mitigate the vulnerability.
Regularly monitor and audit user inputs to detect and prevent XSS attacks.

Long-Term Security Practices

Educate users on safe browsing habits and the risks of clicking on suspicious links.
Implement web application firewalls to filter and block malicious traffic.
Conduct regular security assessments and penetration testing to identify and address vulnerabilities.

Patching and Updates

Stay informed about security updates and patches released by cPanel.
Apply patches promptly to ensure your systems are protected against known vulnerabilities.