EUVD-2024-16586

Comprehensive Technical Analysis of EUVD-2024-16586

1. Vulnerability Assessment and Severity Evaluation

The EUVD entry EUVD-2024-16586 describes an authentication bypass vulnerability in Arcserve Unified Data Protection versions 9.2 and 8.1. The vulnerability is located in the edge-app-base-webui.jar!com.ca.arcserve.edge.app.base.ui.server.EdgeLoginServiceImpl.doLogin() function within the wizardLogin module.

Severity Evaluation:

• Base Score: 9.8 (Critical)
• Base Score Version: CVSS 3.1
• Base Score Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

The CVSS vector indicates that the vulnerability can be exploited over the network (AV:N) with low complexity (AC:L), requires no privileges (PR:N), and does not require user interaction (UI:N). The impact on confidentiality, integrity, and availability is high (C:H/I:H/A:H), making this a critical vulnerability.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Network-Based Attack: An attacker can exploit this vulnerability remotely over the network.
• Authentication Bypass: The primary attack vector involves bypassing the authentication mechanism, allowing unauthorized access to the system.

Exploitation Methods:

• Direct Exploitation: An attacker could craft a malicious request to the doLogin() function, bypassing the authentication checks and gaining unauthorized access.
• Automated Scripts: Attackers may use automated scripts to scan for vulnerable systems and exploit the vulnerability en masse.

3. Affected Systems and Software Versions

Affected Software:

• Arcserve Unified Data Protection versions 9.2 and 8.1

Affected Components:

• edge-app-base-webui.jar
• com.ca.arcserve.edge.app.base.ui.server.EdgeLoginServiceImpl.doLogin() function
• wizardLogin module

4. Recommended Mitigation Strategies

Immediate Actions:

• Patch Management: Apply the latest patches and updates provided by Arcserve.
• Network Segmentation: Isolate affected systems from critical networks to limit potential damage.
• Access Controls: Implement strict access controls and monitor for unusual login attempts.

Long-Term Strategies:

• Regular Audits: Conduct regular security audits and vulnerability assessments.
• Intrusion Detection: Deploy intrusion detection systems (IDS) to monitor for suspicious activities.
• User Training: Educate users on the importance of security practices and the risks associated with unauthorized access.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to organizations using Arcserve Unified Data Protection within the European Union. Given the critical nature of the vulnerability, it could lead to data breaches, unauthorized access, and potential disruption of services. This underscores the need for robust cybersecurity measures and timely patch management to protect sensitive data and ensure compliance with regulations such as GDPR.

6. Technical Details for Security Professionals

Vulnerability Details:

• Function Affected: com.ca.arcserve.edge.app.base.ui.server.EdgeLoginServiceImpl.doLogin()
• Module: wizardLogin
• File: edge-app-base-webui.jar

Exploitation Steps:

1. Identify Target: Scan for systems running Arcserve Unified Data Protection versions 9.2 or 8.1.
2. Craft Request: Create a malicious request targeting the doLogin() function to bypass authentication.
3. Execute Attack: Send the crafted request to the vulnerable system, gaining unauthorized access.

Detection and Response:

• Log Analysis: Monitor login attempts and look for unusual patterns or failed login attempts followed by successful logins.
• Behavioral Analysis: Use behavioral analytics to detect anomalous activities that may indicate an authentication bypass.
• Incident Response: Have an incident response plan in place to quickly address and mitigate any detected exploitation attempts.

References:

• Tenable Security Research

Aliases:

• CVE-2024-0799
• GSD-2024-0799

Assigner:

• Tenable

ENISA IDs:

• Product: Unified Data Protection (versions 0 ≤9.2, 0 ≤8.1)
• Vendor: Arcserve

By addressing this vulnerability promptly and implementing the recommended mitigation strategies, organizations can significantly reduce the risk of unauthorized access and potential data breaches.