CVE-2023-35835

Comprehensive Technical Analysis of CVE-2023-35835

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2023-35835 CVSS Score: 9.8

The vulnerability in SolaX Pocket WiFi 3 through 3.001.02 is critical due to the lack of network authentication for the WiFi access point, which persists even after the initial setup. This allows unauthorized access to the web-based configuration utility and the unauthenticated ModBus protocol interface. The high CVSS score of 9.8 indicates a severe vulnerability that can be easily exploited with significant impact.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

1. Unauthorized Access: An attacker can connect to the WiFi network without any authentication, gaining access to the configuration utility and ModBus interface.
2. Man-in-the-Middle (MitM) Attacks: Due to the lack of encryption, an attacker can intercept and manipulate data transmitted over the WiFi network.
3. Configuration Tampering: An attacker can modify the device settings, potentially disrupting its operation or compromising its security.
4. Data Exfiltration: Sensitive data can be accessed or exfiltrated through the unauthenticated ModBus interface.

Exploitation Methods:

1. WiFi Scanning: Attackers can use WiFi scanning tools to identify and connect to the unsecured network.
2. Web Interface Exploitation: Once connected, attackers can access the web-based configuration utility to change settings or extract information.
3. ModBus Protocol Exploitation: Attackers can use ModBus protocol tools to interact with the device, potentially causing operational disruptions or data breaches.

3. Affected Systems and Software Versions

Affected Systems:

• SolaX Pocket WiFi 3

Affected Software Versions:

• Firmware versions 3 through 3.001.02

4. Recommended Mitigation Strategies

1. Firmware Update: Immediately update the firmware to the latest version that addresses this vulnerability.
2. Network Segmentation: Isolate the device on a separate network segment to limit potential attack vectors.
3. Access Control: Implement strong access controls and authentication mechanisms for the WiFi network.
4. Monitoring and Logging: Enable monitoring and logging to detect and respond to any unauthorized access attempts.
5. Regular Audits: Conduct regular security audits to identify and mitigate similar vulnerabilities.

5. Impact on Cybersecurity Landscape

This vulnerability highlights the critical importance of securing IoT devices, especially those used in industrial and critical infrastructure settings. The lack of basic security measures such as network authentication can lead to severe consequences, including data breaches, operational disruptions, and potential safety risks. It underscores the need for robust security practices in the design and deployment of IoT devices.

6. Technical Details for Security Professionals

Vulnerability Details:

• WiFi Access Point: The device provides a WiFi access point with no network authentication, allowing anyone to connect without a password.
• Web-based Configuration Utility: The web interface for configuration is accessible without authentication, enabling unauthorized changes.
• ModBus Protocol Interface: The ModBus interface is unauthenticated, allowing attackers to interact with the device and potentially extract sensitive data.

Detection and Response:

1. Network Scanning: Use network scanning tools to identify unsecured WiFi networks and devices.
2. Intrusion Detection Systems (IDS): Deploy IDS to monitor for unauthorized access attempts and suspicious activities.
3. Incident Response Plan: Develop and implement an incident response plan to quickly address any security breaches.
4. Patch Management: Ensure that all devices are regularly updated with the latest security patches and firmware updates.

References:

• SolaX Power Downloads
• Upgrading the Pocket WiFi Firmware
• You Gotta Hack That Blog
• SolaX Inverters Pocket WiFi Using Poor Authentication

By addressing this vulnerability promptly and implementing robust security measures, organizations can significantly reduce the risk of unauthorized access and potential exploitation.