EUVD-2025-23537

Comprehensive Technical Analysis of EUVD-2025-23537

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2025-23537 is an unauthenticated OS command injection vulnerability in the Shenzhen Aitemi M300 Wi-Fi Repeater (hardware model MT02). This vulnerability allows remote attackers within Wi-Fi range to inject arbitrary shell commands that execute as root during device reboot, leading to full system compromise.

Severity Evaluation:

• Base Score: 9.4 (CVSS 4.0)
• Vector String: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

The high base score indicates a critical vulnerability due to the following factors:

• Attack Vector (AV:A): Adjacent network, meaning the attacker must be within Wi-Fi range.
• Attack Complexity (AC:L): Low complexity, indicating that the attack is relatively straightforward to execute.
• Privileges Required (PR:N): No privileges are required, meaning the attacker does not need any special access.
• User Interaction (UI:N): No user interaction is required.
• Impact Metrics: High confidentiality, integrity, and availability impact, as well as high scope change impact.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Wi-Fi Range Exploitation: An attacker within Wi-Fi range can exploit the vulnerability by configuring the device in Extender mode via its captive portal.
• Command Injection: The attacker can inject arbitrary shell commands into the extap2g SSID field, which are executed as root during device reboot.

Exploitation Methods:

• SSID Field Manipulation: The attacker can insert malicious commands into the SSID field, which are then executed without proper escaping.
• Reboot Trigger: The attacker can trigger a device reboot to execute the injected commands, leading to full system compromise.

3. Affected Systems and Software Versions

Affected Systems:

• Shenzhen Aitemi M300 Wi-Fi Repeater (hardware model MT02)

Software Versions:

• All versions of the firmware for the M300 Wi-Fi Repeater are presumed to be affected unless otherwise specified by the vendor.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Disable Extender Mode: Temporarily disable the Extender mode to prevent exploitation.
• Network Segmentation: Segment the network to limit the attack surface and reduce the risk of unauthorized access.
• Monitoring: Implement continuous monitoring to detect any suspicious activities or unauthorized access attempts.

Long-Term Mitigation:

• Firmware Update: Apply a firmware update from the vendor that addresses the vulnerability.
• Input Validation: Ensure that all input fields, especially those related to SSID configuration, are properly validated and escaped.
• Access Control: Implement strict access controls to limit who can configure the device.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to European cybersecurity, particularly in environments where Wi-Fi repeaters are commonly used, such as homes, small businesses, and public spaces. The potential for full system compromise can lead to data breaches, unauthorized access, and further exploitation of connected devices.

Regulatory Implications:

• GDPR Compliance: Organizations must ensure that they comply with GDPR regulations by protecting personal data and reporting any breaches.
• ENISA Guidelines: Follow ENISA guidelines for securing IoT devices and network infrastructure.

6. Technical Details for Security Professionals

Vulnerability Details:

• CVE ID: CVE-2025-34147
• Vulnerability Type: OS Command Injection
• Affected Component: Captive portal configuration for Extender mode
• Exploitation Point: extap2g SSID field

Exploitation Steps:

1. Access Captive Portal: Connect to the Wi-Fi network and access the captive portal.
2. Configure Extender Mode: Navigate to the Extender mode configuration.
3. Inject Malicious Command: Insert a malicious command into the extap2g SSID field.
4. Trigger Reboot: Initiate a device reboot to execute the injected command.

Detection and Response:

• Log Analysis: Monitor system logs for any unusual activities or command executions.
• Intrusion Detection Systems (IDS): Deploy IDS to detect and alert on suspicious network traffic.
• Incident Response Plan: Develop and implement an incident response plan to quickly address any detected exploitation attempts.

References:

• Chocapikk Blog Post
• AliExpress Product Page

By addressing this vulnerability promptly and implementing robust security measures, organizations can mitigate the risk of exploitation and protect their networks from potential attacks.