CVE-2018-20913 : Security Advisory and Response

A security vulnerability in cPanel versions before 70.0.23 allows attackers to access the root accesshash by exploiting the WHM /cgi/trustclustermaster.cgi endpoint (SEC-364).

Understanding CVE-2018-20913

This CVE identifies a vulnerability in cPanel that could lead to unauthorized access to sensitive information.

What is CVE-2018-20913?

The CVE-2018-20913 vulnerability in cPanel versions prior to 70.0.23 allows malicious actors to retrieve the root accesshash through a specific endpoint.

The Impact of CVE-2018-20913

Exploiting this vulnerability could result in unauthorized access to critical system information, potentially leading to further security breaches.

Technical Details of CVE-2018-20913

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability in cPanel versions before 70.0.23 enables attackers to read the root accesshash via the WHM /cgi/trustclustermaster.cgi endpoint (SEC-364).

Affected Systems and Versions

Affected Product: cPanel
Affected Versions: Before 70.0.23

Exploitation Mechanism

Attackers can exploit the vulnerability by accessing the WHM /cgi/trustclustermaster.cgi endpoint to retrieve the root accesshash.

Mitigation and Prevention

Protecting systems from CVE-2018-20913 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update cPanel to version 70.0.23 or newer to mitigate the vulnerability.
Monitor system logs for any suspicious activities related to unauthorized access.

Long-Term Security Practices

Regularly update and patch cPanel to address security vulnerabilities promptly.
Implement strong access controls and authentication mechanisms to prevent unauthorized access.

Patching and Updates

Ensure timely installation of security patches and updates provided by cPanel to address known vulnerabilities.