CVE-2020-26106 Explained : Impact and Mitigation

cPanel before 88.0.3 has weak permissions (world readable) for the proxy subdomains log file (SEC-558).

Understanding CVE-2020-26106

This CVE involves a vulnerability in cPanel that exposes the proxy subdomains log file due to weak permissions.

What is CVE-2020-26106?

The vulnerability in cPanel before version 88.0.3 allows unauthorized access to the proxy subdomains log file, potentially leading to sensitive information exposure.

The Impact of CVE-2020-26106

The weak permissions on the proxy subdomains log file can result in unauthorized users accessing sensitive data, compromising the confidentiality of information stored within cPanel.

Technical Details of CVE-2020-26106

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability in cPanel before 88.0.3 is due to world-readable permissions set on the proxy subdomains log file, allowing unauthorized users to read its contents.

Affected Systems and Versions

Affected Product: cPanel
Affected Version: Before 88.0.3

Exploitation Mechanism

Unauthorized users can exploit this vulnerability by directly accessing the proxy subdomains log file with world-readable permissions.

Mitigation and Prevention

Protecting systems from CVE-2020-26106 requires immediate actions and long-term security practices.

Immediate Steps to Take

Upgrade cPanel to version 88.0.3 or newer to address the weak permissions issue.
Regularly monitor and restrict access to sensitive files within cPanel.

Long-Term Security Practices

Implement the principle of least privilege to restrict access to critical files.
Conduct regular security audits to identify and address permission issues.

Patching and Updates

Apply patches and updates provided by cPanel to ensure that security vulnerabilities like weak permissions are promptly addressed.