CVE-2018-13858 in MusicCenter
Summary
by MITRE
MusicCenter / Trivum Multiroom Setup Tool V8.76 - SNR 8604.26 - C4 Professional allows unauthorized remote attackers to reboot or execute other functions via the "/xml/system/control.xml" URL, using the GET request "?action=reboot" for example.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 03/05/2020
This vulnerability exists in the MusicCenter Trivum Multiroom Setup Tool version 8.76 with SNR 8604.26, representing a critical security flaw that allows unauthorized remote attackers to execute arbitrary system commands through a specially crafted GET request. The vulnerability is specifically located at the /xml/system/control.xml endpoint where the system fails to properly validate or authenticate incoming requests, creating an attack surface that can be exploited to perform system-level operations without proper authorization. The flaw stems from insufficient input validation and authentication mechanisms within the web interface, enabling attackers to manipulate the action parameter to trigger system reboots or potentially other unauthorized functions.
The technical implementation of this vulnerability demonstrates a classic case of insecure direct object reference combined with insufficient access controls, which aligns with CWE-284 Access Control Issues and CWE-352 Cross-Site Request Forgery. Attackers can simply construct a GET request with the action parameter set to reboot or other malicious actions, bypassing any legitimate authentication mechanisms that should normally protect these critical system functions. This represents a fundamental failure in the application's security architecture where the system assumes that all requests to the control.xml endpoint are legitimate, creating a pathway for remote code execution or system compromise through simple web-based attacks.
The operational impact of this vulnerability is severe as it provides attackers with the ability to disrupt service availability through unauthorized system reboots, potentially causing significant business disruption in professional audio environments where system reliability is paramount. The vulnerability affects C4 Professional devices that utilize this setup tool, creating a risk profile that extends beyond simple denial of service to potential compromise of entire audio networks. Organizations using these systems face the risk of unauthorized access to their audio infrastructure, which could be leveraged for further attacks or to cause operational disruptions that may affect critical events or broadcasts. The remote nature of the attack means that threat actors do not require physical access to the devices, making this vulnerability particularly dangerous in enterprise or professional environments.
Mitigation strategies should focus on implementing proper authentication and authorization controls at the /xml/system/control.xml endpoint, ensuring that all requests are validated against legitimate user credentials and session tokens. Network segmentation and firewall rules should be implemented to restrict access to these administrative endpoints to trusted networks only, following principle of least privilege. Regular security updates and patches should be deployed immediately upon vendor releases, and input validation should be strengthened to prevent parameter manipulation attacks. Additionally, monitoring and logging of all access to system control endpoints should be implemented to detect and respond to unauthorized access attempts. This vulnerability highlights the importance of securing all web interfaces in professional audio equipment and demonstrates how seemingly simple control functions can represent significant security risks when proper access controls are not implemented. The ATT&CK framework categorizes this as a privilege escalation and defense evasion technique, as attackers can leverage this vulnerability to maintain persistent access and avoid detection through legitimate system management functions.