EUVD-2025-4157

Comprehensive Technical Analysis of EUVD-2025-4157

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2025-4157 pertains to a CWE-306 "Missing Authentication for Critical Function" in the maxprofile/menu/routes.lua file of Q-Free MaxTime versions up to and including 2.11.0. This flaw allows an unauthenticated remote attacker to edit user group permissions via crafted HTTP requests.

Severity Evaluation:

• Base Score: 9.8 (Critical)
• Base Score Version: CVSS 3.1
• Base Score Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

The CVSS score of 9.8 indicates a critical vulnerability due to the following factors:

• Attack Vector (AV): Network (N)
• Attack Complexity (AC): Low (L)
• Privileges Required (PR): None (N)
• User Interaction (UI): None (N)
• Scope (S): Unchanged (U)
• Confidentiality (C): High (H)
• Integrity (I): High (H)
• Availability (A): High (H)

This high score underscores the potential for severe impact on confidentiality, integrity, and availability of the affected system.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Unauthenticated Remote Access: An attacker can exploit this vulnerability without needing any authentication, making it highly accessible.
• Crafted HTTP Requests: The attacker can send specially crafted HTTP requests to the vulnerable endpoint to modify user group permissions.

Exploitation Methods:

• Direct Exploitation: An attacker can directly send HTTP requests to the maxprofile/menu/routes.lua endpoint to change permissions.
• Automated Scripts: Attackers can use automated scripts to repeatedly send malicious requests, making it easier to exploit the vulnerability at scale.

3. Affected Systems and Software Versions

Affected Systems:

• Q-Free MaxTime versions up to and including 2.11.0.

Software Versions:

• All versions of Q-Free MaxTime from 0 to 2.11.0 are vulnerable.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Patching: Upgrade to a version of Q-Free MaxTime that addresses this vulnerability. If a patch is not available, consider disabling the affected functionality until a fix is released.
• Access Controls: Implement strict access controls to limit exposure to the vulnerable endpoint.
• Network Segmentation: Segregate the affected system from the broader network to minimize the attack surface.

Long-Term Mitigation:

• Regular Audits: Conduct regular security audits and vulnerability assessments.
• Monitoring: Implement continuous monitoring to detect and respond to suspicious activities.
• User Education: Educate users about the risks and best practices for maintaining security.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to organizations using Q-Free MaxTime, particularly those in critical infrastructure sectors such as transportation and logistics. Given the critical nature of the vulnerability, it could lead to unauthorized access, data breaches, and disruption of services, impacting the broader European cybersecurity landscape.

6. Technical Details for Security Professionals

Vulnerability Details:

• CWE-306: Missing Authentication for Critical Function
• Affected File: maxprofile/menu/routes.lua
• Exploit Method: Crafted HTTP requests to modify user group permissions

Detection and Response:

• Log Analysis: Monitor logs for unusual HTTP requests targeting the maxprofile/menu/routes.lua endpoint.
• Intrusion Detection Systems (IDS): Deploy IDS to detect and alert on suspicious network activities.
• Incident Response Plan: Develop and implement an incident response plan tailored to this vulnerability.

References:

• Advisory: Nozomi Networks Vulnerability Advisory
• ENISA ID Product: e7b8a0a9-25fa-36cb-aac4-42fa89e4858d
• ENISA ID Vendor: 3bcb1aba-508b-3356-b3c4-82355dd8ba9e

Conclusion: The vulnerability EUVD-2025-4157 is critical and requires immediate attention. Organizations should prioritize patching and implementing robust security measures to mitigate the risk. Continuous monitoring and regular security assessments are essential to maintain a strong security posture.