EUVD-2023-37447

Comprehensive Technical Analysis of EUVD-2023-37447

1. Vulnerability Assessment and Severity Evaluation

Vulnerability Description: The vulnerability in Marval MSM through versions 14.19.0.12476 and 15.0 involves a System account with default credentials. This allows a remote attacker to log in and create a valid session, enabling backend calls to various endpoints within the application.

Severity Evaluation: The CVSS (Common Vulnerability Scoring System) base score of 9.8 indicates a critical vulnerability. The scoring 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 minimal skill or resources.
• 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.

This high score underscores the critical nature of the vulnerability, making it a top priority for remediation.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Remote Login: An attacker can remotely log in using the default credentials.
• Session Creation: Once logged in, the attacker can create a valid session.
• Backend Calls: The attacker can make backend calls to various endpoints within the application, potentially leading to data exfiltration, unauthorized modifications, or service disruptions.

Exploitation Methods:

• Credential Stuffing: Using known default credentials to gain access.
• Automated Scripts: Employing automated scripts to log in and create sessions.
• API Exploitation: Making unauthorized API calls to manipulate data or disrupt services.

3. Affected Systems and Software Versions

Affected Systems:

• Marval MSM versions through 14.19.0.12476 and 15.0.

Software Versions:

• All versions up to and including 14.19.0.12476 and 15.0 are affected.

4. Recommended Mitigation Strategies

Immediate Actions:

• Change Default Credentials: Immediately change the default credentials for the System account to strong, unique passwords.
• Patch Management: Apply any available patches or updates from Marval Global.
• Network Segmentation: Implement network segmentation to limit the exposure of vulnerable systems.

Long-Term Strategies:

• Regular Audits: Conduct regular security audits to identify and mitigate similar vulnerabilities.
• Access Controls: Implement strict access controls and monitor for unauthorized access attempts.
• Intrusion Detection: Deploy intrusion detection systems (IDS) to monitor for suspicious activities.

5. Impact on European Cybersecurity Landscape

Regional Impact:

• Data Breaches: Potential for widespread data breaches affecting European organizations using Marval MSM.
• Service Disruptions: Possible disruptions in services provided by affected organizations.
• Compliance Issues: Non-compliance with GDPR and other regulatory requirements due to unauthorized access and data breaches.

Mitigation Efforts:

• Collaboration: Increased collaboration between European cybersecurity agencies and organizations to share threat intelligence and mitigation strategies.
• Awareness Campaigns: Launch awareness campaigns to educate organizations about the importance of changing default credentials and implementing robust security measures.

6. Technical Details for Security Professionals

Technical Insights:

• Default Credentials: The vulnerability stems from the use of default credentials for the System account.
• Session Management: The ability to create a valid session after login highlights the need for robust session management practices.
• Backend Endpoints: The vulnerability allows access to backend endpoints, emphasizing the importance of securing API endpoints and implementing proper authentication and authorization mechanisms.

Detection and Response:

• Log Monitoring: Monitor logs for unauthorized access attempts and successful logins using default credentials.
• Anomaly Detection: Implement anomaly detection to identify unusual activities that may indicate an exploitation attempt.
• Incident Response: Develop and maintain an incident response plan to quickly address and mitigate any security breaches.

References:

• Marval Global Software
• Cyber Skydd CVE-2023-33282

By addressing this vulnerability promptly and comprehensively, organizations can significantly reduce the risk of unauthorized access and potential data breaches, thereby enhancing their overall cybersecurity posture.