Description
Growatt ShineLan-X communication dongle has an undocumented backup account with undocumented credentials which allows significant level access to the device, such as allowing any attacker to access the Setting Center. This means that this is effectively backdoor for all devices utilizing a Growatt ShineLan-X communication dongle.
EPSS Score:
0%
Comprehensive Technical Analysis of EUVD-2025-203251
1. Vulnerability Assessment and Severity Evaluation
The vulnerability described in EUVD-2025-203251 pertains to the Growatt ShineLan-X communication dongle, which contains an undocumented backup account with undocumented credentials. This flaw allows unauthorized access to the device's Setting Center, effectively creating a backdoor. 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 vulnerability can be exploited from an adjacent network.
- AC:L (Low Complexity): The attack requires low skill or resources.
- AT:N (No Authentication): No authentication is required to exploit the vulnerability.
- PR:N (No Privileges Required): No privileges are required to exploit the vulnerability.
- UI:N (No User Interaction): No user interaction is required to exploit the vulnerability.
- VC:H (High Confidentiality Impact): Complete loss of confidentiality.
- VI:H (High Integrity Impact): Complete loss of integrity.
- VA:H (High Availability Impact): Complete loss of availability.
- SC:H (High Scope Change): The vulnerability impacts other components beyond the initial scope.
- SI:H (High Integrity Requirement): The vulnerability affects a component with high integrity requirements.
- SA:H (High Availability Requirement): The vulnerability affects a component with high availability requirements.
2. Potential Attack Vectors and Exploitation Methods
Attack Vectors:
- Network Access: An attacker with access to the same network as the ShineLan-X dongle can exploit the vulnerability.
- Remote Access: If the dongle is exposed to the internet, remote attackers can exploit the vulnerability.
Exploitation Methods:
- Credential Discovery: Attackers can discover the undocumented credentials through network scanning or brute-force attacks.
- Unauthorized Access: Once the credentials are known, attackers can gain significant access to the device, including the Setting Center.
- Data Exfiltration: Attackers can exfiltrate sensitive data, modify settings, or disrupt operations.
3. Affected Systems and Software Versions
Affected Systems:
- Growatt ShineLan-X communication dongle
Affected Software Versions:
- Versions 3.6.0.0 through 3.6.0.2
4. Recommended Mitigation Strategies
Immediate Actions:
- Network Segmentation: Isolate the ShineLan-X dongle from public networks to limit exposure.
- Credential Management: Change default credentials and implement strong, unique passwords.
- Monitoring: Implement continuous monitoring for unusual network activity.
Long-Term Actions:
- Patch Management: Apply vendor-provided patches as soon as they are available.
- Access Control: Implement strict access controls and regular audits of user permissions.
- Security Training: Educate staff on the importance of cybersecurity best practices.
5. Impact on European Cybersecurity Landscape
The presence of a backdoor in widely-used communication dongles poses a significant risk to the European cybersecurity landscape. This vulnerability can be exploited to compromise critical infrastructure, industrial control systems, and other sensitive environments. The potential for widespread data breaches, operational disruptions, and financial losses underscores the need for robust cybersecurity measures and continuous monitoring.
6. Technical Details for Security Professionals
Detection:
- Network Scanning: Use tools like Nmap or Nessus to scan for devices with open ports and services.
- Log Analysis: Analyze logs for unusual access patterns or unauthorized login attempts.
Mitigation:
- Firewall Rules: Implement firewall rules to restrict access to the ShineLan-X dongle.
- Intrusion Detection Systems (IDS): Deploy IDS to detect and alert on suspicious activities.
- Regular Audits: Conduct regular security audits and vulnerability assessments.
Incident Response:
- Containment: Isolate affected devices immediately upon detection of an incident.
- Forensic Analysis: Perform forensic analysis to determine the extent of the breach and identify the attack vector.
- Remediation: Apply patches, update credentials, and restore systems from clean backups.
References:
By addressing this vulnerability promptly and comprehensively, organizations can mitigate the risk of unauthorized access and ensure the security of their systems.