EUVD-2023-34775

Comprehensive Technical Analysis of EUVD-2023-34775

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2023-34775 affects the Shenzen Tenda Technology IP Camera CP3 V11.10.00.2211041355. The device does not adequately defend against physical access to U-Boot via the UART (Universal Asynchronous Receiver/Transmitter). This allows an attacker with physical access to the device to view the Wi-Fi password and insert a hardcoded boot password for console access.

Severity Evaluation:

• Base Score: 9.8 (Critical)
• Base Score Version: 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 high base score indicates a critical vulnerability due to the ease of exploitation (low complexity) and the significant impact on confidentiality, integrity, and availability.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

1. Physical Access: An attacker with physical access to the device can connect to the UART interface.
2. Network Access: Once physical access is gained, the attacker can retrieve the Wi-Fi password, potentially leading to further network compromise.

Exploitation Methods:

1. UART Interface Access: Connecting to the UART interface to access U-Boot.
2. Hardcoded Boot Password: Inserting the hardcoded boot password to gain console access.
3. Wi-Fi Password Extraction: Viewing the Wi-Fi password displayed via the UART interface.

3. Affected Systems and Software Versions

Affected Systems:

• Shenzen Tenda Technology IP Camera CP3

Affected Software Versions:

• Firmware version V11.10.00.2211041355

4. Recommended Mitigation Strategies

1. Physical Security: Ensure that the IP camera is placed in a secure location where unauthorized physical access is restricted.
2. Firmware Update: Check for and apply any available firmware updates from the vendor that address this vulnerability.
3. Network Segmentation: Isolate the IP camera on a separate network segment to limit potential lateral movement if the device is compromised.
4. Monitoring and Alerts: Implement monitoring and alerting mechanisms to detect any unauthorized access attempts.
5. Access Controls: Enforce strict access controls and authentication mechanisms for console access.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to organizations and individuals using the affected IP camera model within the European Union. Given the critical nature of the vulnerability, it could lead to unauthorized access to sensitive information, network compromise, and potential data breaches. The impact on confidentiality, integrity, and availability is high, making it a priority for cybersecurity professionals to address.

6. Technical Details for Security Professionals

U-Boot and UART Interface:

• U-Boot: A universal boot loader used in embedded systems to initialize hardware and load the operating system.
• UART Interface: A hardware interface for asynchronous serial communication, commonly used for debugging and console access in embedded devices.

Exploitation Steps:

1. Gain Physical Access: Obtain physical access to the IP camera.
2. Connect to UART: Use a UART adapter to connect to the UART interface on the device.
3. Access U-Boot: Use a terminal emulator to communicate with U-Boot via the UART interface.
4. Retrieve Wi-Fi Password: View the Wi-Fi password displayed in the U-Boot output.
5. Insert Boot Password: Enter the hardcoded boot password to gain console access.

References:

• GitHub Repository - tmp_NCD.md
• GitHub Repository - tmp_PBA.md

Aliases:

• CVE-2023-30354
• GSD-2023-30354

Assigner:

• Mitre

EPSS:

• N/A

ENISA ID Product and Vendor:

• Product ID: f5936f3a-dd5d-372b-83e9-262b1573cee7
• Vendor ID: 8f6f4ead-0f9e-3e0b-bcbd-033ae43230ef

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