EUVD-2023-30595

Comprehensive Technical Analysis of EUVD-2023-30595

1. Vulnerability Assessment and Severity Evaluation

The vulnerability identified as EUVD-2023-30595 affects the /network_config/nsg_masq.cgi component of DCN (Digital China Networks) DCBI-Netlog-LAB v1.0. This issue allows attackers to bypass authentication and execute arbitrary commands via a crafted request. The CVSS (Common Vulnerability Scoring System) base score of 9.8 indicates a critical severity level. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H breaks down as follows:

• AV:N (Attack Vector: Network): The vulnerability is exploitable over the network.
• AC:L (Attack Complexity: Low): The attack requires low complexity to exploit.
• PR:N (Privileges Required: None): No privileges are required to exploit the vulnerability.
• UI:N (User Interaction: None): No user interaction is required.
• S:U (Scope: Unchanged): The vulnerability does not change the security scope.
• C:H (Confidentiality: High): The vulnerability has a high impact on confidentiality.
• I:H (Integrity: High): The vulnerability has a high impact on integrity.
• A:H (Availability: High): The vulnerability has a high impact on availability.

2. Potential Attack Vectors and Exploitation Methods

Given the nature of the vulnerability, potential attack vectors include:

• Remote Command Execution: Attackers can craft HTTP requests to the /network_config/nsg_masq.cgi endpoint to execute arbitrary commands on the affected system.
• Authentication Bypass: The vulnerability allows attackers to bypass authentication mechanisms, gaining unauthorized access to the system.

Exploitation methods may involve:

• Crafted HTTP Requests: Attackers can send specially crafted HTTP requests to the vulnerable endpoint to execute commands.
• Automated Scripts: Malicious actors can use automated scripts to scan for vulnerable systems and exploit them en masse.

3. Affected Systems and Software Versions

The vulnerability specifically affects:

• DCN DCBI-Netlog-LAB v1.0: This version of the software is known to be vulnerable.

Other versions of the software may also be affected, but this has not been confirmed. Organizations using DCN DCBI-Netlog-LAB should verify the version in use and apply appropriate patches or updates.

4. Recommended Mitigation Strategies

To mitigate the risk associated with this vulnerability, the following strategies are recommended:

• Patch Management: Apply the latest patches and updates provided by DCN for DCBI-Netlog-LAB.
• Network Segmentation: Isolate critical systems and limit network access to the vulnerable component.
• Access Controls: Implement strict access controls and authentication mechanisms to prevent unauthorized access.
• Intrusion Detection Systems (IDS): Deploy IDS to monitor for suspicious activity and potential exploitation attempts.
• Regular Audits: Conduct regular security audits and vulnerability assessments to identify and address potential security gaps.

5. Impact on European Cybersecurity Landscape

The critical nature of this vulnerability poses significant risks to organizations within the European Union, particularly those using DCN DCBI-Netlog-LAB for network management. The potential for remote command execution and authentication bypass can lead to severe data breaches, unauthorized access, and disruption of services. This underscores the importance of robust cybersecurity measures and timely patch management to protect against such threats.

6. Technical Details for Security Professionals

For security professionals, the following technical details are pertinent:

• Vulnerable Component: /network_config/nsg_masq.cgi
• Exploitation Method: Crafted HTTP requests to execute arbitrary commands.
• Detection: Monitor network traffic for unusual patterns or requests targeting the vulnerable endpoint.
• Mitigation: Implement web application firewalls (WAF) to filter and block malicious requests.
• Response: In case of a suspected breach, follow incident response procedures, including containment, eradication, and recovery.

Conclusion

EUVD-2023-30595 represents a critical vulnerability in DCN DCBI-Netlog-LAB v1.0 that requires immediate attention. Organizations should prioritize patching and implementing robust security measures to mitigate the risk. The European cybersecurity landscape must remain vigilant against such threats to ensure the protection of critical infrastructure and sensitive data.

References

• GitHub Repository
• Aliases: CVE-2023-26802, GSD-2023-26802
• Assigner: Mitre
• EPSS: 2
• ENISA ID Product: n/a
• ENISA ID Vendor: n/a