CVE-2020-10113 : Security Advisory and Response

cPanel before 84.0.20 allows self XSS via a temporary character-set specification (SEC-515).

Understanding CVE-2020-10113

This CVE identifies a security vulnerability in cPanel that enables self XSS through a temporary character-set specification.

What is CVE-2020-10113?

cPanel versions prior to 84.0.20 are susceptible to a self XSS issue due to how temporary character-set specifications are handled.

The Impact of CVE-2020-10113

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

Technical Details of CVE-2020-10113

Vulnerability Description

The vulnerability in cPanel before version 84.0.20 permits self XSS via a temporary character-set specification (SEC-515).

Affected Systems and Versions

Affected Product: cPanel
Affected Versions: All versions before 84.0.20

Exploitation Mechanism

The vulnerability can be exploited by tricking a user into clicking on a specially crafted link or visiting a malicious website.

Mitigation and Prevention

Immediate Steps to Take

Update cPanel to version 84.0.20 or later to mitigate the vulnerability.
Educate users about the risks of clicking on unknown links or visiting suspicious websites.

Long-Term Security Practices

Regularly monitor and audit web application security controls.
Implement content security policies to prevent XSS attacks.

Patching and Updates

Apply security patches and updates promptly to ensure protection against known vulnerabilities.