CVE-2020-10114 : Exploit Details and Defense Strategies

cPanel before 84.0.20 allows stored self-XSS via the HTML file editor (SEC-535).

Understanding CVE-2020-10114

This CVE involves a vulnerability in cPanel that allows for stored self-XSS through the HTML file editor.

What is CVE-2020-10114?

CVE-2020-10114 is a security vulnerability in cPanel versions prior to 84.0.20 that enables stored self-XSS via the HTML file editor (SEC-535).

The Impact of CVE-2020-10114

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

Technical Details of CVE-2020-10114

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

Vulnerability Description

The vulnerability in cPanel before version 84.0.20 permits stored self-XSS through the HTML file editor, identified as SEC-535.

Affected Systems and Versions

Affected Product: cPanel
Affected Versions: Versions prior to 84.0.20

Exploitation Mechanism

The vulnerability can be exploited by an attacker to inject and execute malicious scripts within the HTML file editor, compromising user sessions.

Mitigation and Prevention

To address CVE-2020-10114, follow these mitigation strategies:

Immediate Steps to Take

Update cPanel to version 84.0.20 or later to patch the vulnerability.
Educate users to avoid executing untrusted scripts within the HTML file editor.

Long-Term Security Practices

Regularly monitor and audit user-generated content within cPanel.
Implement strict input validation and output encoding to prevent XSS attacks.

Patching and Updates

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