EUVD-2025-21182

Comprehensive Technical Analysis of EUVD-2025-21182

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2025-21182 involves an OEM IP camera manufactured by Shenzhen Liandian Communication Technology LTD. The device exposes a Telnet service on port 23 with undocumented, default credentials. This service is enabled by default and cannot be disabled or configured via the device’s web interface or user manual. An attacker with network access can authenticate using these default credentials and gain root-level shell access to the device.

Severity Evaluation:

• CVSS Base Score: 10.0
• CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/U:Red

The CVSS score of 10.0 indicates a critical vulnerability. The high scores across all metrics (AV:N, AC:L, AT:N, PR:N, UI:N, VC:H, VI:H, VA:H, SC:H, SI:H, SA:H) suggest that the vulnerability is easily exploitable and can lead to severe consequences, including remote code execution and privilege escalation.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

1. Network Access: An attacker needs network access to the IP camera. This can be achieved through local network access or remote access if the camera is exposed to the internet.
2. Default Credentials: The attacker uses the undocumented, default credentials to authenticate via Telnet.

Exploitation Methods:

1. Telnet Access: The attacker connects to the IP camera’s Telnet service using the default credentials.
2. Root-Level Access: Once authenticated, the attacker gains root-level shell access, allowing them to execute arbitrary commands.
3. Remote Code Execution: The attacker can upload and execute malicious code, potentially leading to further compromise of the network.
4. Privilege Escalation: With root access, the attacker can escalate privileges and perform actions such as modifying system files, installing backdoors, or exfiltrating data.

3. Affected Systems and Software Versions

Affected Systems:

• Device: V380 IP Camera
• Firmware Version: AppFHE1_V1.0.6.0
• Kernel: KerFHE1_PTZ_WIFI_V3.1.1
• Hardware: HwFHE1_WF6_PTZ_WIFI_20201218

Software Versions:

• The vulnerability specifically affects firmware version 1.0.6.0.

4. Recommended Mitigation Strategies

1. Network Segmentation: Isolate IP cameras on a separate network segment to limit access.
2. Firewall Rules: Implement strict firewall rules to block unauthorized access to port 23.
3. Credential Management: Change default credentials to strong, unique passwords if possible.
4. Firmware Updates: Regularly check for firmware updates from the vendor. If no updates are available, consider replacing the device with a more secure model.
5. Monitoring and Logging: Implement monitoring and logging to detect and respond to suspicious activities.
6. Disable Telnet: If possible, disable Telnet and use more secure protocols like SSH.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to European organizations and individuals using the affected IP cameras. The potential for remote code execution and privilege escalation can lead to:

• Data Breaches: Unauthorized access to sensitive data.
• Network Compromise: Further compromise of connected networks and devices.
• Surveillance: Unauthorized surveillance and monitoring.
• Compliance Issues: Violation of data protection regulations such as GDPR.

6. Technical Details for Security Professionals

Detection:

• Network Scanning: Use network scanning tools to detect open Telnet ports on IP cameras.
• Log Analysis: Analyze logs for unusual Telnet activity.

Exploitation:

• Telnet Client: Use a Telnet client to connect to the IP camera with default credentials.
• Shell Access: Once authenticated, gain root-level shell access and execute commands.

Mitigation:

• Network Configuration: Configure network settings to restrict access to the IP camera.
• Access Control: Implement strong access control measures to prevent unauthorized access.
• Incident Response: Develop an incident response plan to quickly detect and respond to potential breaches.

References:

• GitHub Repository: Research-on-v380-cctv-ip-camera

Conclusion: The vulnerability in the Shenzhen Liandian Communication Technology LTD IP camera is critical and requires immediate attention. Organizations should implement robust mitigation strategies to protect against potential exploitation. Continuous monitoring and regular updates are essential to maintain the security of IP cameras and connected networks.