Roundcube Log Exposure Scanner

Roundcube is widely used as a web-based client within email services, offering users an intuitive interface to access their mailboxes. It is commonly deployed in environments ranging from small personal setups to large-scale organizational email systems. Administrators and service providers implement Roundcube to deliver a user-friendly mail client experience without extensive configuration. It is favored due to its adaptability and open-source nature, which allows customization and scalability. Roundcube facilitates managing emails, contacts, and calendars seamlessly through a web interface. Its usage spans various sectors including education, enterprise, and personal domains.

Log Exposure in Roundcube occurs when log files, which may contain sensitive information, are accessible without proper authentication. These logs can be exposed due to misconfigurations, allowing unauthorized access to potentially sensitive information such as error messages and user activity. This vulnerability can lead to repeated system errors or unauthorized access patterns being disclosed, making the application's operations more transparent to attackers. Malicious entities may utilize this information to launch further attacks or exploit other vulnerabilities in the system. Efficiently identifying and correcting these exposures is critical to maintaining system security and user privacy. Protecting log integrity ensures that operational insights are retained solely for legitimate administrators and mitigates the risk of information leakage.

The Log Exposure vulnerability in Roundcube is typically detected through improper configuration of accessible paths. These paths often include directories such as "logs/sendmail" or "logs/errors," which, when left unprotected, can grant visibility into the server's internal operations. Vulnerability assessments usually target these endpoints, retrieving log data with patterns like "IMAP Error:" or "PHP Error:" if improperly secured. HTTP status responses reflecting successful access (e.g., 200 status code) further confirm exposure. System administrators can rectify this by restricting access permissions or rerouting logs to more secure locations within the server architecture. Implementing strict access controls and regular log file audits are recommended to safeguard against exploitation.

If exploited, the Log Exposure vulnerability could lead to a wide range of security implications, including unauthorized access to sensitive data contained within log files. Attackers leveraging this information could potentially deduce further exploits within the system, craft advanced phishing schemes, or perform escalations of privilege if credentials are exposed. Furthermore, operational data leakage might undermine user trust and present compliance issues, especially if the organization handles personal or sensitive data. Recognizing and promptly responding to such vulnerabilities is vital for maintaining the integrity, confidentiality, and availability of the service. Regular monitoring and diligent configuration management are essential in preemptively addressing such risks.

REFERENCES

• https://github.com/detectify/ugly-duckling/blob/master/modules/crowdsourced/roundcube-log-disclosure.json