CVE-2018-20900 : What You Need to Know

The YUM autorepair feature in cPanel, prior to version 71.9980.37, has a vulnerability that allows stored cross-site scripting (XSS) attacks.

Understanding CVE-2018-20900

This CVE involves a security issue in cPanel's YUM autorepair feature that could be exploited for XSS attacks.

What is CVE-2018-20900?

cPanel versions before 71.9980.37 are susceptible to stored XSS attacks due to a flaw in the YUM autorepair functionality.

The Impact of CVE-2018-20900

The 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-2018-20900

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

Vulnerability Description

The vulnerability in cPanel before version 71.9980.37 enables stored XSS through the YUM autorepair feature, identified as SEC-399.

Affected Systems and Versions

Product: cPanel
Vendor: cPanel
Versions Affected: All versions before 71.9980.37

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into the YUM autorepair feature, which are then executed when accessed by a user.

Mitigation and Prevention

Protecting systems from CVE-2018-20900 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update cPanel to version 71.9980.37 or newer to patch the vulnerability.
Regularly monitor and audit the YUM autorepair feature for any suspicious activities.

Long-Term Security Practices

Implement input validation mechanisms to prevent XSS attacks.
Educate users on safe browsing habits and the risks of executing untrusted scripts.

Patching and Updates

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