EUVD-2024-45180

Comprehensive Technical Analysis of EUVD-2024-45180

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2024-45180 affects FutureNet NXR series routers manufactured by Century Systems Co., Ltd. The primary issue is that REST-APIs, which are supposed to be disabled by default, are unexpectedly enabled when the device is powered up if either the http-server (GUI) or Web authentication is enabled. This misconfiguration allows an attacker to access and alter the router's settings via REST-APIs using the factory default credentials.

Severity Evaluation:

• CVSS Base Score: 9.8
• CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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

• Attack Vector (AV:N): Network-based attack, meaning it can be exploited remotely.
• Attack Complexity (AC:L): Low complexity, indicating that the attack does not require specialized conditions.
• Privileges Required (PR:N): No privileges are required to exploit the vulnerability.
• User Interaction (UI:N): No user interaction is required.
• Scope (S:U): Unchanged, meaning the vulnerability affects the same security scope.
• Confidentiality (C:H), Integrity (I:H), and Availability (A:H): High impact on all three aspects, indicating that an attacker can compromise the confidentiality, integrity, and availability of the affected system.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Remote Access: An attacker can exploit this vulnerability over the network without needing physical access to the device.
• Default Credentials: The use of factory default credentials for REST-APIs makes it easier for attackers to gain unauthorized access.

Exploitation Methods:

• Scanning: Attackers can scan for devices with open REST-APIs and attempt to access them using default credentials.
• Automated Scripts: Malicious actors can use automated scripts to exploit the vulnerability en masse, targeting multiple devices simultaneously.
• Man-in-the-Middle (MitM) Attacks: If the REST-APIs are not secured with HTTPS, attackers can intercept and manipulate the data being transmitted.

3. Affected Systems and Software Versions

Affected Products:

• FutureNet NXR-G060 series: Firmware versions prior to 21.15.6C1
• FutureNet NXR-G110 series: Firmware versions 21.15.7 and later but prior to 21.15.9
• FutureNet NXR-G050 series: Firmware versions 21.12.5 and later but prior to 21.12.11

Vendor:

• Century Systems Co., Ltd.

4. Recommended Mitigation Strategies

Immediate Actions:

• Firmware Update: Upgrade to the latest firmware versions that address this vulnerability.
• Disable REST-APIs: Manually disable REST-APIs if they are not required for operation.
• Change Default Credentials: Immediately change the default username and password for REST-APIs to strong, unique credentials.
• Network Segmentation: Implement network segmentation to limit the exposure of vulnerable devices.

Long-Term Strategies:

• Regular Audits: Conduct regular security audits to identify and mitigate similar vulnerabilities.
• Access Control: Implement strict access control policies to limit who can access and configure the devices.
• Monitoring: Use network monitoring tools to detect and respond to suspicious activities.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to European organizations and individuals using the affected routers. Given the critical nature of routers in network infrastructure, successful exploitation could lead to:

• Data Breaches: Unauthorized access to sensitive information.
• Service Disruptions: Compromised routers could be used to disrupt network services.
• Malware Distribution: Attackers could use compromised routers to distribute malware across the network.

Regulatory Compliance:

• Organizations must ensure compliance with relevant regulations such as GDPR, which mandates the protection of personal data.
• Failure to address this vulnerability could result in regulatory penalties and reputational damage.

6. Technical Details for Security Professionals

Detection:

• Network Scanning: Use network scanning tools to identify devices with open REST-APIs.
• Log Analysis: Analyze logs for unusual access patterns or failed login attempts.

Mitigation:

• Configuration Management: Ensure that all devices are configured securely, with unnecessary services disabled.
• Patch Management: Implement a robust patch management process to ensure timely updates.
• Intrusion Detection Systems (IDS): Deploy IDS to detect and alert on suspicious activities related to REST-APIs.

Incident Response:

• Containment: Isolate affected devices to prevent further spread of the attack.
• Eradication: Remove any malicious software and restore the device to a secure state.
• Recovery: Ensure that all systems are fully operational and secure before reconnecting them to the network.

Conclusion: The vulnerability described in EUVD-2024-45180 is critical and requires immediate attention from organizations using the affected FutureNet NXR series routers. By implementing the recommended mitigation strategies and maintaining a proactive security posture, organizations can significantly reduce the risk of exploitation and protect their network infrastructure.