EUVD-2025-203256

Comprehensive Technical Analysis of EUVD-2025-203256

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2025-203256 pertains to the lack of encryption on the configuration interface for Growatt ShineLan-X and MIC 3300TL-X inverters. This flaw allows an attacker with network access to intercept and potentially manipulate communication requests between the inverter and its cloud endpoint. The severity of this vulnerability is rated with a CVSS Base Score of 9.4, indicating a critical risk.

CVSS Vector Breakdown:

• AV:A (Adjacent Network): The attacker must be on the same network as the vulnerable device.
• AC:L (Low Complexity): The attack requires minimal skill and resources.
• AT:N (No Authentication): No authentication is required to exploit the vulnerability.
• PR:N (No Privileges Required): No special privileges are needed.
• UI:N (No User Interaction): No user interaction is required.
• VC:H (High Confidentiality Impact): Sensitive data can be intercepted.
• VI:H (High Integrity Impact): Data integrity can be compromised.
• VA:H (High Availability Impact): Availability of the service can be disrupted.
• SC:H (High Scope Change): The vulnerability can affect other components beyond the initial target.
• SI:H (High Scope Integrity): The integrity of other components can be compromised.
• SA:H (High Scope Availability): The availability of other components can be disrupted.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

1. Man-in-the-Middle (MitM) Attack: An attacker can intercept unencrypted communication between the inverter and the cloud endpoint, capturing sensitive data.
2. Data Tampering: The attacker can modify the intercepted data, leading to incorrect configurations or malicious commands being sent to the inverter.
3. Replay Attacks: Captured communication can be replayed to execute unauthorized actions.

Exploitation Methods:

• Network Sniffing: Using tools like Wireshark to capture unencrypted traffic.
• Traffic Injection: Using tools like Scapy to inject malicious packets into the network.
• ARP Spoofing: Redirecting traffic to the attacker's machine for interception and manipulation.

3. Affected Systems and Software Versions

The vulnerability affects the following systems and software versions:

• Growatt ShineLan-X: Versions 3.6.0.0 to 3.6.0.2
• Growatt MIC 3300TL-X: Specific versions are not mentioned, but it is implied that similar versions are affected.

4. Recommended Mitigation Strategies

Immediate Mitigations:

1. Network Segmentation: Isolate the inverter's network to limit access.
2. Firewall Rules: Implement strict firewall rules to restrict access to the configuration interface.
3. Monitoring: Use network monitoring tools to detect unusual traffic patterns.

Long-Term Mitigations:

1. Firmware Update: Apply the latest firmware updates from Growatt that include encryption for the configuration interface.
2. Encryption Implementation: Ensure that all communication between the inverter and the cloud endpoint is encrypted using protocols like TLS.
3. Regular Audits: Conduct regular security audits to identify and mitigate similar vulnerabilities.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to the European cybersecurity landscape, particularly in sectors relying on renewable energy inverters. Unauthorized access and manipulation of these devices can lead to:

• Energy Grid Disruptions: Compromised inverters can cause instability in the energy grid.
• Data Breaches: Sensitive operational data can be intercepted, leading to potential data breaches.
• Financial Losses: Disruptions in energy supply can result in financial losses for both consumers and energy providers.

6. Technical Details for Security Professionals

Detection:

• Network Traffic Analysis: Use tools like Wireshark to analyze network traffic for unencrypted communication.
• Intrusion Detection Systems (IDS): Deploy IDS to detect anomalous traffic patterns indicative of MitM attacks.

Response:

• Incident Response Plan: Develop and implement an incident response plan specific to this vulnerability.
• Patch Management: Ensure a robust patch management process to apply updates promptly.

Prevention:

• Secure Configuration: Ensure all devices are configured securely, with encryption enabled for all communication.
• Access Control: Implement strict access control measures to limit who can access the configuration interface.

References:

• DIVD CSIRT Report
• NVD Detail

By addressing this vulnerability promptly and comprehensively, organizations can mitigate the risks associated with unencrypted communication in critical infrastructure devices.