EUVD-2025-19175

Comprehensive Technical Analysis of EUVD-2025-19175

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2025-19175 affects certain hybrid DVR models from Hunt Electronic, specifically the HBF-09KD and HBF-16NK models. The vulnerability allows unauthenticated remote attackers to access a system configuration file, which contains plaintext administrator credentials. This exposure of sensitive information is critical because it can lead to complete compromise of the affected systems.

Severity Evaluation:

• CVSS Base Score: 9.8
• CVSS 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. The vector breakdown shows that the attack can be executed over the network (AV:N), requires low complexity (AC:L), does not require any privileges (PR:N), and does not need user interaction (UI:N). The impact on confidentiality, integrity, and availability is high (C:H/I:H/A:H).

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Network-Based Attacks: Since the vulnerability can be exploited over the network without authentication, attackers can target these devices remotely.
• Automated Scanning: Attackers can use automated tools to scan for vulnerable devices and extract the configuration files.

Exploitation Methods:

• Direct Access: Attackers can directly access the system configuration file via a known URL or endpoint.
• Credential Harvesting: Once the configuration file is accessed, attackers can harvest plaintext administrator credentials.
• Lateral Movement: With administrator credentials, attackers can move laterally within the network, compromising other connected systems.

3. Affected Systems and Software Versions

Affected Models:

• HBF-09KD
• HBF-16NK

Affected Software Versions:

• Versions up to and including V3.1.67_1786 BB11115

4. Recommended Mitigation Strategies

Immediate Actions:

• Patching: Apply the latest firmware updates provided by Hunt Electronic.
• Network Segmentation: Isolate affected DVRs from the public internet and internal networks.
• Access Control: Implement strict access controls and monitor network traffic for unauthorized access attempts.

Long-Term Strategies:

• Regular Audits: Conduct regular security audits and vulnerability assessments.
• Credential Management: Use strong, unique passwords and consider implementing multi-factor authentication (MFA).
• Intrusion Detection: Deploy intrusion detection systems (IDS) to monitor for suspicious activities.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to organizations and individuals using the affected DVR models within the European Union. The exposure of sensitive information can lead to unauthorized access, data breaches, and potential compliance violations under regulations such as GDPR. The widespread use of DVRs in surveillance systems makes this vulnerability particularly concerning for public safety and privacy.

6. Technical Details for Security Professionals

Vulnerability Details:

• Exposure Mechanism: The system configuration file is accessible without authentication, likely due to a misconfiguration or flaw in the firmware.
• File Location: The exact URL or endpoint for accessing the configuration file should be identified and monitored.
• Credential Storage: Administrator credentials are stored in plaintext within the configuration file.

Detection and Response:

• Log Analysis: Review access logs for unusual or unauthorized access attempts to the configuration file.
• Incident Response: Develop an incident response plan specific to this vulnerability, including steps for containment, eradication, and recovery.
• Threat Intelligence: Share threat intelligence with relevant cybersecurity communities and organizations to enhance collective defense.

References:

• TWCERT Advisory 1
• TWCERT Advisory 2

By addressing this vulnerability promptly and comprehensively, organizations can mitigate the risk of unauthorized access and data breaches, thereby enhancing their overall cybersecurity posture.