EUVD-2025-199669

Comprehensive Technical Analysis of EUVD-2025-199669

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2025-199669 is an Authenticated Root Remote Code Execution (RCE) issue in the Mozart FM Transmitter software by DB Electronica Telecomunicazioni S.p.A. The vulnerability arises from improper user input filtering in the main_ok.php script, where user-supplied data for hour and time is passed directly into a date shell command.

Severity Evaluation:

• Base Score: 9.3 (Critical)
• Base Score Version: 4.0
• Base Score Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N

The high base score indicates a critical vulnerability due to the potential for complete system compromise. The attack complexity is low, and the attack vector is network-based, making it accessible to remote attackers.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Authenticated Access: An attacker must first gain authenticated access to the system. This could be achieved through credential theft, brute-forcing, or exploiting other vulnerabilities.
• Input Manipulation: Once authenticated, the attacker can manipulate the hour and time parameters in the main_ok.php script to inject malicious commands.

Exploitation Methods:

• Command Injection: The attacker can inject shell commands into the date command, leading to arbitrary code execution with root privileges.
• Privilege Escalation: Given the root-level access, the attacker can escalate privileges and perform actions such as installing malware, exfiltrating data, or disrupting services.

3. Affected Systems and Software Versions

The vulnerability affects multiple versions of the Mozart FM Transmitter software:

• Versions: 30, 50, 100, 300, 500, 1000, 2000, 3000, 3500, 6000, 7000

All organizations using these versions are at risk and should take immediate action to mitigate the vulnerability.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Patching: Apply the latest security patches provided by DB Electronica Telecomunicazioni S.p.A.
• Input Validation: Implement robust input validation and sanitization mechanisms to prevent command injection.
• Access Control: Strengthen authentication mechanisms and enforce the principle of least privilege.

Long-Term Mitigation:

• Regular Audits: Conduct regular security audits and vulnerability assessments.
• Monitoring: Implement continuous monitoring and logging to detect and respond to suspicious activities.
• User Training: Educate users on the importance of strong passwords and the risks of phishing attacks.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to the European cybersecurity landscape, particularly for organizations in the telecommunications sector. The potential for remote code execution with root privileges can lead to widespread disruption of services, data breaches, and loss of trust in critical infrastructure.

Regulatory Compliance:

• Organizations must ensure compliance with relevant regulations such as GDPR and NIS Directive.
• Reporting the vulnerability and any incidents to national cybersecurity authorities is crucial for coordinated response efforts.

6. Technical Details for Security Professionals

Vulnerability Details:

• Affected Component: main_ok.php
• Vulnerable Function: User input for hour and time passed to date shell command
• Exploitability: High, due to low attack complexity and network-based attack vector

Detection and Response:

• Intrusion Detection Systems (IDS): Deploy IDS to monitor for suspicious activities related to the main_ok.php script.
• Log Analysis: Analyze logs for unusual patterns in the hour and time parameters.
• Incident Response: Develop an incident response plan specific to this vulnerability, including containment, eradication, and recovery steps.

References:

• Abdulmhsblog Post
• NVD Detail

By addressing this vulnerability promptly and comprehensively, organizations can mitigate the risk of severe cybersecurity incidents and maintain the integrity and availability of their telecommunications infrastructure.