CVE-2018-20865 : What You Need to Know

cPanel before version 76.0.8 was found to have a vulnerability in the WHM Additional Backup Destination field, known as Self XSS (Cross-Site Scripting) (SEC-459).

Understanding CVE-2018-20865

This CVE identifies a specific vulnerability in cPanel software.

What is CVE-2018-20865?

cPanel version 76.0.8 and earlier are susceptible to Self XSS in the WHM Additional Backup Destination field.

The Impact of CVE-2018-20865

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

Technical Details of CVE-2018-20865

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The vulnerability lies in the WHM Additional Backup Destination field, enabling Self XSS attacks.

Affected Systems and Versions

Affected Version: cPanel versions before 76.0.8

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into the affected field, tricking users into executing them.

Mitigation and Prevention

Protecting systems from CVE-2018-20865 is crucial to maintaining security.

Immediate Steps to Take

Update cPanel to version 76.0.8 or later to patch the vulnerability.
Educate users to avoid inputting untrusted scripts in fields like the WHM Additional Backup Destination.

Long-Term Security Practices

Regularly monitor and audit system logs for any suspicious activities.
Implement web application firewalls to detect and block malicious traffic.

Patching and Updates

Stay informed about security updates from cPanel and promptly apply patches to mitigate known vulnerabilities.