Description
Improper access control in the HTTP server in YI Car Dashcam v3.88 allows unrestricted file downloads, uploads, and API commands. API commands can also be made to make unauthorized modifications to the device settings, such as disabling recording, disabling sounds, factory reset.
EPSS Score:
0%
Comprehensive Technical Analysis of EUVD-2025-4285
1. Vulnerability Assessment and Severity Evaluation
The vulnerability described in EUVD-2025-4285 pertains to improper access control in the HTTP server of YI Car Dashcam v3.88. This flaw allows unrestricted file downloads, uploads, and API commands, which can lead to unauthorized modifications to device settings. The CVSS (Common Vulnerability Scoring System) base score of 9.8 indicates a critical severity level. The vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H breaks down as follows:
- AV:N (Attack Vector: Network): The vulnerability is exploitable over the network.
- AC:L (Attack Complexity: Low): The attack requires minimal skill or resources.
- PR:N (Privileges Required: None): No privileges are required to exploit the vulnerability.
- UI:N (User Interaction: None): No user interaction is required.
- S:U (Scope: Unchanged): The vulnerability does not change the security scope.
- C:H (Confidentiality: High): There is a high impact on confidentiality.
- I:H (Integrity: High): There is a high impact on integrity.
- A:H (Availability: High): There is a high impact on availability.
Given these metrics, the vulnerability poses a significant risk to the confidentiality, integrity, and availability of the affected device.
2. Potential Attack Vectors and Exploitation Methods
Potential attack vectors include:
- Unrestricted File Downloads and Uploads: An attacker could download sensitive files from the device or upload malicious files to compromise the device.
- Unauthorized API Commands: An attacker could send API commands to modify device settings, such as disabling recording, disabling sounds, or performing a factory reset.
- Network-Based Attacks: Since the vulnerability is exploitable over the network, an attacker could remotely target the device without needing physical access.
Exploitation methods could involve:
- Network Scanning: Identifying vulnerable devices on the network.
- Exploit Scripts: Using automated scripts to send malicious API commands or perform file operations.
- Man-in-the-Middle (MitM) Attacks: Intercepting and modifying network traffic to exploit the vulnerability.
3. Affected Systems and Software Versions
The vulnerability specifically affects YI Car Dashcam v3.88. Other versions of the YI Car Dashcam may also be affected if they share the same HTTP server implementation. It is crucial to verify the impact on other versions and related products from YI Technology.
4. Recommended Mitigation Strategies
To mitigate the risk associated with this vulnerability, the following strategies are recommended:
- Patch Management: Ensure that the YI Car Dashcam firmware is updated to the latest version that addresses this vulnerability.
- Network Segmentation: Isolate the dashcam from other critical networks to limit potential attack vectors.
- Access Control: Implement strict access controls and authentication mechanisms to restrict unauthorized access.
- Monitoring and Logging: Enable logging and monitoring to detect and respond to suspicious activities promptly.
- Firewall Configuration: Configure firewalls to block unauthorized access to the dashcam's HTTP server.
5. Impact on European Cybersecurity Landscape
The vulnerability in YI Car Dashcam v3.88 highlights the broader issue of IoT (Internet of Things) device security. Given the widespread use of dashcams in Europe, this vulnerability could have significant implications for personal and public safety. Unauthorized access to dashcam footage could lead to privacy breaches, while tampering with device settings could compromise road safety.
This incident underscores the need for robust security measures in IoT devices and the importance of regular updates and patches. European cybersecurity authorities should emphasize the implementation of security standards and best practices for IoT devices to prevent similar vulnerabilities in the future.
6. Technical Details for Security Professionals
For security professionals, the following technical details are pertinent:
- Vulnerability Identification: The vulnerability can be identified by examining the HTTP server's access control mechanisms and API endpoints.
- Detection Methods: Use network traffic analysis tools to detect unusual file operations or API commands. Implement intrusion detection systems (IDS) to monitor for suspicious activities.
- Exploit Development: Developers should avoid using hardcoded credentials and ensure proper authentication and authorization mechanisms are in place.
- Remediation: Apply the latest firmware updates provided by YI Technology. Conduct thorough security audits to identify and address similar vulnerabilities in other IoT devices.
Conclusion
The vulnerability described in EUVD-2025-4285 is critical and requires immediate attention. Organizations and individuals using YI Car Dashcam v3.88 should prioritize updating their devices and implementing robust security measures to mitigate the risk. The European cybersecurity landscape must continue to evolve to address the growing threats posed by IoT device vulnerabilities.