CVE-2018-20922 : Vulnerability Insights and Analysis

The version of cPanel prior to 70.0.23 is susceptible to a stored cross-site scripting (XSS) attack through a WHM DNS Cleanup action (SEC-376).

Understanding CVE-2018-20922

cPanel before 70.0.23 allows stored XSS via a WHM DNS Cleanup action (SEC-376).

What is CVE-2018-20922?

CVE-2018-20922 is a vulnerability in cPanel that enables a stored cross-site scripting (XSS) attack through a specific WHM DNS Cleanup action (SEC-376).

The Impact of CVE-2018-20922

This 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-2018-20922

Vulnerability Description

The vulnerability in cPanel before version 70.0.23 allows for stored XSS via the WHM DNS Cleanup action (SEC-376).

Affected Systems and Versions

Product: cPanel
Vendor: cPanel
Versions affected: Prior to 70.0.23

Exploitation Mechanism

The vulnerability can be exploited by an attacker to inject and execute malicious scripts through the WHM DNS Cleanup action.

Mitigation and Prevention

Immediate Steps to Take

Update cPanel to version 70.0.23 or later to mitigate the vulnerability.
Regularly monitor and audit user inputs and outputs to detect and prevent XSS attacks.

Long-Term Security Practices

Implement input validation and output encoding to prevent XSS vulnerabilities.
Educate users on safe browsing practices and the risks of executing untrusted scripts.

Patching and Updates

Ensure timely installation of security patches and updates provided by cPanel to address known vulnerabilities.