CVE-2018-20935 : What You Need to Know

This CVE involves a vulnerability in cPanel versions prior to 70.0.23 that allows for stored XSS through a specific WHM action.

Understanding CVE-2018-20935

This CVE identifies a security issue in cPanel software that could be exploited for cross-site scripting attacks.

What is CVE-2018-20935?

cPanel versions before 70.0.23 are susceptible to stored XSS via the "Reset a DNS Zone" action in WHM (SEC-412).

The Impact of CVE-2018-20935

The vulnerability could be exploited by attackers to execute malicious scripts in the context of an authenticated user, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2018-20935

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The vulnerability in cPanel allows for the storage of malicious scripts through the WHM action, enabling XSS attacks.

Affected Systems and Versions

Affected: cPanel versions prior to 70.0.23
Not affected: Versions from 70.0.23 onwards

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into the DNS Zone reset action in WHM.

Mitigation and Prevention

Protecting systems from CVE-2018-20935 requires immediate actions and long-term security measures.

Immediate Steps to Take

Update cPanel to version 70.0.23 or newer to mitigate the vulnerability.
Educate users on identifying and avoiding suspicious links or content.

Long-Term Security Practices

Regularly monitor and audit system logs for any unusual activities.
Implement web application firewalls to detect and block XSS attacks.

Patching and Updates

Stay informed about security updates and patches released by cPanel.
Apply patches promptly to ensure the system is protected against known vulnerabilities.